Question

Find the circumference of the circle with the given radius or diameter. (Use 3.14 for it) r=20

Answer 1

Answer:

C = 2πr = 2 * 3.14 * 20 = 125.6

Answer 2

Answer:

$\huge\boxed{C\approx125.6}$

Step-by-step explanation:

The formula of a circumference of a circle:

$C=d\pi=2\pi r$

d - diameter

r - radius

We have the radius r = 20.

Substitute:

$C=2\pi(20)=40\pi$

use π ≈ 3.14

$C\approx(40)(3.14)=125.6$