Posted by Keisha on Wednesday, August 5, 2009 at 11:11am.
A ring has an outsdie diameter of 3.85cm and an inside diameter of 2.63cm.Calculate its area?

Math  Ms. Sue, Wednesday, August 5, 2009 at 11:18am
Find the area of each circle.
A = pi * r^2
Then subtract the smaller from the larger area. That will be the area of the ring.