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The area of a circle is 1447 m2.What is the diameter of the circle?A. 6 mB. 12 mnOC. 24 mD. 144 m

User Firefusion
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1 Answer

10 votes
10 votes

We know that

• The area of the circle is 144pi square meters.

We need to use the following formula


A=\pi r^2

Replacing the given information, we have


144\pi=\pi r^2

Now, we solve for r


r^2=(144\pi)/(\pi)=144\rightarrow r=√(144)=12

This means the radius is 12 meters, now we need to find the diameter with the formula


d=2r\rightarrow d=2(12)=24

Therefore, the diameter is 24 meters long.

User Korich
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