SOLUTION: Calculate the area of a circular washer of diameter 3.42cm if the hole in the center is 1cm diameter?

Algebra ->  Test -> SOLUTION: Calculate the area of a circular washer of diameter 3.42cm if the hole in the center is 1cm diameter?      Log On


   

Question 916861: Calculate the area of a circular washer of diameter 3.42cm if the hole in the center is 1cm diameter?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Area+=+pi%2Ar%5E2
r = d/2
-----------
Get the area of the OD (3.42 cm), then subtract the area of the ID (1 cm).