What is the circumference of a circle when the area is 64pi mi^2

16(pi)

Step-by-step explanation:

If the area of a circle is 64 pi, what is its circumference?

Area = (pi)r^2

Substitute 64(pi) in place of Area

64(pi)=(pi)r^2

r=8

Circumference = 2(pi)r

Substitute 8 in place of r to get:

=2(pi)8

Circumference =16(pi)

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.

heyyy

step-by-step explanation: