Question

A circle has a diameter of 27 centimeters. Which equation can be used to find the radius of this circle?

Answer 1

r=13.5

Explanation:

radius= diameter/2

r= 27/ 2

r= 13.5

Answer 2

27 = 2r

13.5 =r

Explanation:

We know that the diameter is twice the radius

d = 2r

27 = 2r

Divide by 2

27/2 = 2r/2

13.5 = r