Question

The radius of a circle is 15 inches. What is

the circumference of the circle? Write
your answer using T.

Answer 1

C = 30pi inches

Explanation:

The radius is 15 inches (said so in the question)

The diameter is 30 inches (The diameter is twice the radius)

The circumference is

C = pi•d

C = pi•30

C = 30pi

The circumference is 30pi inches.