Question

How do you find the radius of a circle​

Answer 1

Explanation:

if you are given diameter ,then radius=diameter/2

if you are given the co-ordinates of extremities of diameter then find diameter by distance formula and then radius as given above.

if area is given the area=πr²

r=√(area/π)

if circumference C is given then C=2πr

r=C/2π

Answer 2

To calculate the radius of a circle by using the circumference, take the circumference of the circle and divide it by 2 times π.