how do you find the cirumference and area of a circle if the radius is 4.5?

Answer 1

The formula for circumference is:
C = 2 * Pi * 2 * radius

For area:
A = Pi * radius^2

Plug the radius into those formulas and solve.

If you post your answers, we'll be glad to check them.

http://www.1728.com/diamform.htm