Question

PLEASE HELP ASAP

The radius of a circle is 9 cm. Find the circumference of the circle.

(A) 56.52 cm
(B) 28.26 cm
(C) 21.14
(D) 14.13 cm

QUESTION #2
Find the circumference of a circle that has a diameter of 5 in.

(A) 31 in
(B) 15 in
(C) 15 in
(D) 1 in

Answer 1

First question: A

Second Question: A

The equation of the circumference of a circle is 2pi radius you multiply the radius by 2 and then multiply it by pi.

Hope this helps :) ....