math






 

Question by  prasath25 (46)

How do you calculate the radius of a circle?

 
+4

Answer by  Mac44 (479)

If you know the circumference, divide by 2*pi. If you know the area, divide by pi and take the square root. Otherwise, measure the diameter and divide by 2.

 
+2

Answer by  Denny (14)

First find the distance around the circle. Then divide this distance first by two and then this result by Pi.

 
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