Answer :
Answer:
To calculate the radius of a circle by using the circumference, take the circumference of the circle and divide it by 2 times π.
Answer:
Step-by-step 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