Question

A circle has a diameter of 121 inches. Which equation can be used to find the radius of this circle? r=121/2π r=1/2(121) r=121π r=2(121)

Answer 1

The radius of a circle is always half its diameter.

Therefore the radius of a circle with a diameter of 121 inches is 1/2(121).

Hence, the correct answer is r = 1/2 (121)

Answer 2

i would say r=1/2(121)