math math math
posted by lily on .
what are the formulas for the area and circumfrence of a circle

A = pi * r^2
C = pi * d
http://www.mathsisfun.com/geometry/circle.html
posted by lily on .
what are the formulas for the area and circumfrence of a circle
A = pi * r^2
C = pi * d
http://www.mathsisfun.com/geometry/circle.html