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What is 75% of the area of a circle with a circumference of 10 units? Round the solution to the nearest square unit.


Answer:

75% of the area of the circle is 6 square units.

Step-by-step explanation:

Given:

Circumference of a circle = 10 units

Now we have to find the radius of the circle, then we have to find the area of the circle.

Circumference of a circle = 2*π*r            [π = 3.14]

2*3.14*r = 10

6.28r = 10

Dividing both side by 6.28, we get

r = 10/6.28

r = 1.59

Now let’s find the area of the circle.

The area of the circle = π*r^2

= 3.14*1.59*1.59

The area of the circle = 7.94, which is 100 %

Now we have to find the 75% of the area of the circle.

75% = 0.75

75% of the area of the circle = 0.75*7.94

= 5.95

To round off to the nearest whole number, we get 6 square units.

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If a rectangular area is rotated in a uniform electric field from the position where the maximum electric flux goes through it to an orientation where only half the flux goes through it, what has been the angle of rotation?


Answered by answersmine AT 22/10/2019 – 02:27 AM

With a uniform electric field, flux go along parallel paths, then flux is therefore proportional to the cosine of the angle rotated.
0 degree rotation => cos(0)=1 => 100% of flux.
60 degrees rotation => cos(60) => 0.5  => how many % of flux?

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PLEASE HELP LAST QUESTION ON TEST Rock layers made of clay have very small particles. The pores between the particles are not well connected. Will a good aquifer form in a layer of clay? A. Yes, because smaller particles tend to increase permeability by increasing the surface area. B. No, because pores that are not well connected have low permeability C. Yes, because smaller particles tend to increase porosity D. both b and c



PLEASE HELP LAST QUESTION ON TEST Rock layers made of clay have very small particles. The pores between the particles are not well connected. Will a good aquifer form in a layer of clay? A. Yes, because smaller particles tend to increase permeability by increasing the surface area. B. No, because pores that are not well connected have low permeability C. Yes, because smaller particles tend to increase porosity D. both b and c

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A company is setting its direct materials and direct labor standards for its leading product. Direct material costs from the supplier are​ $7 per square​ foot, net of purchase discount.​ Freight-in amounts to​ $0.10 per square foot. Basic wages of the assembly line personnel are​ $19 per hour. Payroll taxes are approximately​ 25% of wages. How much is the direct labor cost standard per​ hour


The formula for calculating the direct labor standard is:

Direct labor standard = Basic wages + Payroll tax

or

Direct labor standard = Basic wages + 25% of Basic wages

 

Substituting the given values into the equation:

Direct labor standard = $19 + 0.25 * $19

Direct labor standard = $23.75

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A circle has an area of 12. If the radius is increased by a factor of 2, what is the new area of the circle?


Answered by answersmine AT 22/10/2019 – 02:38 AM

A=12. A=π×r^2(area of a circle)
π×r^2=12
r×2:
π×(r×2)^2= π×r^2×4. Here you can see that the calculation is exactly the same as above except from the Factor 4. This Shows that the area is four times bigger than before: 12×4

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A flower bed has the shape of a rectangle 27 feet long and 9 feet wide. What is its area in square yards



A flower bed has the shape of a rectangle 27 feet long and 9 feet wide. What is its area in square yards

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A science fair poster is a rectangle 48 inches long and 36 inches wide. What is the area of the poster in square feet?


Answer: 1728 square feet.

Step-by-step explanation:

We know that the area of a rectangle is given by :-

text{Area=length*width}

Given: The length of the poster = 48 inches

The width of the poster = 36 inches

Now, the area of the poster is given by :-

text{Area=}48times36\\Rightarrow text{Area=}1728text{ inches}^2

Hence, the area of the poster is 1728 square feet.

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The area of circle b is 25 times greater than the area of circle a. The radius of circle a is 3. What is the radius of circle a of circle b



The area of circle b is 25 times greater than the area of circle a. The radius of circle a is 3. What is the radius of circle a of circle b

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A flower bed has the shape of a rectangle 8 yards long and 3 yards wide. What is its area in square feet?



A flower bed has the shape of a rectangle 8 yards long and 3 yards wide. What is its area in square feet?

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What’s the approximate area of a segment of a circle with a height 6 m and the length of the chord is 20 m? Round your answer to the nearest whole number. A. 746.67 m2


Hello!

The Correct Answer to this would be 100%:

Option “85.4”.

(Work Below)

Given:
height = 6m
chord = 20 m

We need to find the radius of the circle.

20 m = 2 √ [ 6m( 2 x radius – 6 m ) ] 
20 m / 2 = 2 √[ 6m( 2 x radius – 6 m ) ] / 2 
10 m = √ [ 6m( 2 x radius – 6 m ) ] 
(10 m)² = √[ 6m( 2 x radius – 6 m ) ] ² 
100 m² = 6 m( 2 x radius – 6 m ) 
100 m² = 12 m x radius – 36 sq m 
100 m² + 36 m² = 12 m x radius – 36 m² + 36 m² 
136 m² = 12 m x radius 
136 m² / 12 m = 12 m x radius / 12 m 
11.333 m = radius 

the area beneath an arc: 

Area = r² x arc cosine [ ( r – h ) / r ] – ( r – h ) x √( 2 x r x h – h² ). 

r² = (11.333 m)² = 128.444 m² 
r – h= 11.333 m – 6 m = 5.333 m 
r * h = 11.333 m x 6 m = 68 m²

Area = 128.444 m² x arc cosine [ 5.333 m / 11.333 m ] – 5.333 m x √[ 2 x 68 m² – 36 m² ] 

Area = 128.444 m² x arc cosine [ 0.4706 ] – 5.333 m x √ [ 100m² ] 

Area = 128.444 m² x 1.0808 radians – 5.333 m x 10 m 

Area = 138.828 m² – 53.333 m² 

Area = 85.4 m²

Hope this Helps! Have A Wonderful Day! 🙂

And as Always…

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If the side length of the base of a square pyramid is divided by 4 and the slant height is divided by 3, what is the surface area formula that represents these changes?



If the side length of the base of a square pyramid is divided by 4 and the slant height is divided by 3, what is the surface area formula that represents these changes?

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What is the area of the composite figure? (6π + 10) m2 (10π + 10) m2 (12π + 10) m2 (16π + 10) m2



What is the area of the composite figure? (6π + 10) m2 (10π + 10) m2 (12π + 10) m2 (16π + 10) m2

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Sending a busy manager a long email represents a problem in which area of the communication process


Answer:

The problem is in the decoding process by the receiver.

Explanation:

This become a problem when the receiver, busy manager, has to invest to much time to decode the message, that is reading the message. This is a non-effective communication and it’s a problem in every organisation.

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The side of a square measures (3x − 6) units. Part A: What is the expression that represents the area of the square? Show your work to receive full credit. (4 points) Part B: What are the degree and classification of the expression obtained in Part A? (3 points) Part C: How does Part A demonstrate the closure property for polynomials? (3 points)


A. The area of a square is given as:

A = s^2

Where s is a measure of a side of a square. s = (2 x – 5) therefore,

A = (2 x – 5)^2                  

Expanding,

A = 4 x^2 – 20 x + 25

 

B. The degree of a polynomial is the highest exponent of the variable x, in this case 2. Therefore the expression obtained in part A is of 2nd degree.

Furthermore, polynomials are classified according to the number of terms in the expression. There are 3 terms in the expression therefore it is classified as a trinomial.

 

C. The closure property demonstrates that during multiplication or division, the coefficients and power of the variables are affected while during multiplication or division, only the coefficients are affected while the power remain the same.

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A rectangle has a length of the cube root of 81 inches and a width of 3 to the 2 over 3 power inches. Find the area of the rectangle. Select one: a. 3 to the 2 over 3 power inches squared b. 3 to the 8 over 3 power inches squared c. 9 inches squared d. 9 to the 2 over 3 power inches squared



A rectangle has a length of the cube root of 81 inches and a width of 3 to the 2 over 3 power inches. Find the area of the rectangle. Select one: a. 3 to the 2 over 3 power inches squared b. 3 to the 8 over 3 power inches squared c. 9 inches squared d. 9 to the 2 over 3 power inches squared

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Joshua wants to buy some land in Wyoming to start a free range chicken ranch. He wants the land to have a length 500 feet greater than the width, so the chickens have room to run. If the area of the land needs to be 1,742,400 square feet, what must the length be? Round answer to the nearest whole foot.



Joshua wants to buy some land in Wyoming to start a free range chicken ranch. He wants the land to have a length 500 feet greater than the width, so the chickens have room to run. If the area of the land needs to be 1,742,400 square feet, what must the length be? Round answer to the nearest whole foot.

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In relation to surface area, how do you think a gigantic cytoplasm would affect a eukaryotic cell of a multicellular organism?



In relation to surface area, how do you think a gigantic cytoplasm would affect a eukaryotic cell of a multicellular organism?

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How did the decline of the Ottoman Empire help cause World War I? A. The Germans' refusal to ally themselves with the weakening Ottoman Empire upset the balance of power. B. The weakening Ottoman presence in Iraq allowed foreign agents to start rebellions in the area. C. The Ottomans' increasing dependence on English military power led to international tensions. D. The end of centralized Ottoman control in the Balkans led to growing instability in the region.



How did the decline of the Ottoman Empire help cause World War I? A. The Germans’ refusal to ally themselves with the weakening Ottoman Empire upset the balance of power. B. The weakening Ottoman presence in Iraq allowed foreign agents to start rebellions in the area. C. The Ottomans’ increasing dependence on English military power led to international tensions. D. The end of centralized Ottoman control in the Balkans led to growing instability in the region.

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A rectangular pyramid has a base area of 24 in2 and a volume of 48 in3. What is the height of the pyramid?



A rectangular pyramid has a base area of 24 in2 and a volume of 48 in3. What is the height of the pyramid?

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A student wants to know how many 1 cm cubes will fit into a 10 cm by 8 cm by 12 cm box. What measure is the student trying to calculate? height volume perimeter surface area



A student wants to know how many 1 cm cubes will fit into a 10 cm by 8 cm by 12 cm box. What measure is the student trying to calculate? height volume perimeter surface area

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A metal washer is made by cutting out a circle 13.2 mm in diameter from a larger circle. To the nearest tenth, what is the area of the washer?



A metal washer is made by cutting out a circle 13.2 mm in diameter from a larger circle. To the nearest tenth, what is the area of the washer?

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Which Hellenistic inventor and mathematician experimented with levers, created a machine for raising and transporting water and determined formulas for calculating the surface area and volume of a sphere?



Which Hellenistic inventor and mathematician experimented with levers, created a machine for raising and transporting water and determined formulas for calculating the surface area and volume of a sphere?

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What did the United States of America do in retaliation against Iran? They sent more troops to the area. They detained Iranian refugees. They froze all Iranian assets. They boycotted oil from the region.


The correct answer should be
They froze all Iranian assets

They also introduced sanctions and put an embargo on all trade with Iran. They didn’t boycott oil since nobody would do that, and they didn’t send troops out of fear of what would happen to those people. No detaining of Iranians occurred either because it would be counter productive.

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Which of the following best describes the United States? A) It has a market economy with no government regulation. This is the only system that can work with a government run by the people. B) It has a command economy. A large nation like the United States needs the government to control all growth of business to prevent problems. C) It has a traditional economy. Most communities are focused on providing their own needs with the resources available in the local area. D) It has a mixed economy. The government protects individual rights, such as minimum pay for work and choices in goods and services.


THE ANSWER IS A

However, the government should have little to no intervention in our capitalism, market economy, but of course when the economic factors kick in, there is also the government which has to regulate monopolies and mergers to make sure that our market economy is safe and welcoming to all consumers. 

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A semi- circle sits on top of a rectangle. Find it’s area and perimeter. Use 3.14 for pi. The height is 4in and the base is 3in


Check the picture below

if the width or base of the rectangle is 3 units, that means the diameter of the semi-circle is 3, and thus the radius is half that, notice the red radius line

the area of the figure is the area of the rectangle 3×4, plus the area of the semi-circle

bf textit{area of a circle}\\
A=pi r^2\\
-------------------------------\\
textit{area of a semi-circle}\\ A=cfrac{pi r^2}{2}qquad 
begin{cases}
r=radius\
-----\
r=frac{3}{2}
end{cases}implies A=cfrac{pi frac{3^2}{2^2}}{2}implies A=cfrac{frac{9pi }{4}}{frac{2}{1}}
\\\
A=cfrac{9pi }{4}cdot cfrac{1}{2}implies A=cfrac{9pi }{8}