Question

The circumference of a circle can be found using the formula C=2*3.14r

Which is an equivalent equation solved for r?

Answer 1

C=2πr

C=πd

A=πr^2

r=C/2π

r=1/2 d

By the way all you do to solve r is:

C=2πr

C/2π=2πr/2π

C/2π=r

r=C/2π

Hope this helps:)