how many degrees does a square have? What is the radius of a circle with circumference of 18 pi inches?

Question

find out the circumfrence first, then give a shot to answering the question

Answer 1

ok, square has 360 degrees because it has four 90 degrees angle.
For the circumference problem, remember that C=2r*pi, where C=circumference and r = radius
so, 18pi=2*r*pi
18=2*r
9=r

Answer 2

A square has 360 degrees (90 x 4). 18 pi? inches.