GED Math : Area of a Circle

Study concepts, example questions & explanations for GED Math

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Example Questions

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Example Question #71 : Area Of A Circle

Find the area of a circle given that the distance from its center to its edge is 6.25 meters.

Possible Answers:

Correct answer:

Explanation:

Find the area of a circle given that the distance from its center to its edge is 6.25 meters.

Area of a circle is given by:

We know that our radius is 6.25 m, given that this is the distance from the center to the edge.

Plug in and solve.

So our answer is

Example Question #72 : Area Of A Circle

If a circle has a radius of 5, what is its area?

Possible Answers:

Correct answer:

Explanation:

Recall the formula for the area of a circle

Here, r is the radius, which in this case is 5

Example Question #73 : Area Of A Circle

If the diameter of a circle is  centimeters long, what is the area of the circle? 

(Leave answers in )

Possible Answers:

Correct answer:

Explanation:

The formula to calculate the area of a circle is defined as:

The diameter is twice the length of the radius, or . To find the radius, we must divide the diameter by 2.

Now, we plug in  into the formula to find the area of the circle:

 

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