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# Calculate the radius with the area

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calculate the radius of Circle M if the area is 28.26 square inches

Aug 23, 2017

### Best Answer

#1
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Well, we know that the equation for getting the area of a circle is π*r^2.

In this case, we are trying to find the radius.

The equation would be:  28.26=  π*r^2.

Divide both sides by pi to get 28.26/π = r^2

Square root both sides to get sqrt(28.26/π)=r.

Plug sqrt(28.26/π) into a calculator.

You round that answer to the nearest hundredth and you get 3 inches.

The radius is about 3 inches.

Aug 23, 2017

### 2+0 Answers

#1
+1
Best Answer

Well, we know that the equation for getting the area of a circle is π*r^2.

In this case, we are trying to find the radius.

The equation would be:  28.26=  π*r^2.

Divide both sides by pi to get 28.26/π = r^2

Square root both sides to get sqrt(28.26/π)=r.

Plug sqrt(28.26/π) into a calculator.

You round that answer to the nearest hundredth and you get 3 inches.

The radius is about 3 inches.

Gh0sty15 Aug 23, 2017
#2
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Good job, Gh0sty.....!!!!   Aug 23, 2017