Question

What is the circumference of a circle whose radius is 13?
a. 26π b. 13 c. 26
d. 13π

Answer 1

option a ,26 π

Explanation:

In order to find the circumference of the circle, we need to use the formula

C = 2πr

where r is the radius.

Put in the values :

C = π × 13 × 2

C = π × 26

C = 26π

henceforth ,the correct option is a, 26π.

Answer 2

a

Explanation:

the circumference (C) of a circle is calculated as

C = 2πr ( r is the radius )

here r = 13 , then

C = 2π × 13 = 26π