Question

The area of circle B 144 pi ft². how do you Find the circumference of circle B please help

Answer 1

First of all, what is the formula for the area of an circle with the radius 'r'?

Answer 2

pi r2

Answer 3

Good.
Now, that area is given as 144pi.


pi r^2=144pi --------> r^2=144 ---------> r=12 or -12.
Now, radius can't be negative, so r=12

Answer 4

What is the formula for the circumference on an circle with the radius 'r'?

Answer 5

pi r2

Answer 6

That's the area formula.

Answer 7

Circumference formula is 2pi r

Answer 8

oh

Answer 9

we know that r=12, so you can get the circumferece easily.

Answer 10

Don't forget the unit.

Answer 11

ok

Answer 12

thanks i found the answer

Answer 13

welcome :)