Question #39e7f

2 Answers
Jan 9, 2018

4pi

Explanation:

The formula for the circumference of a circle with radius r is 2rpi. We replace r with 2 to get 2*2pi=4pi.

So the answer is 4pi.

Jan 9, 2018

2pi(2) = 4pi ~~ 12.566

Explanation:

The equation to calculate the circumference of a circle is 2pir or pid (they are the same since d = 2r when d is the diameter and r is the radius.

Therefore, you just need to plug the radius of 2 into the equation 2pir to find the circumference:
2pi(2) = 4pi ~~ 12.566