Question

Solve C = 2πr (solve for "r")
C = 15

Answer 1

C = 2πr

to solve for r, divide both sides by 2π

C/2π = r

Answer 2

This is the second part to the question:
b. If a circle's circumference is 15 inches, what is its radius? Leave the symbol π in your answer.

The radius of the circle is _______

Answer 3

divide both sides by 2π
C/2π = r

just substitute 15 to C :) then divide 2π :)

Answer 4

15=2(pi)r
7.5=(pi)r
7.5/(pi)=r

Answer 5

would i use 3.14 or 22/7?

Answer 6

3.14 :)

Answer 7

anything else

Answer 8

so if I did my work right, "r" would equal 2.39?

Answer 9

YUP! :)

Answer 10

awesome! thanks you guys!

Answer 11

You're welcome! Anytime :)