Question

If the diameter of a circle is 20 inches, what is the radius?

Answer 1

radius=10

Explanation:

radius is always half the diameter therefore the answer is 10 inches.

Answer 2

Explanation:

Diameter = 20cm . Radius = 10 cm. Circumference = 2πr = 2(3.14)(10) = 6.28 * 10 = 62.8 cm.