A cake has a cylindrical shape with an altitude of 4cm, and radius of 2cm. The top of the cake is decorated with 1/2 inch layer of icing. What is the total volume of the icing of the cake?
But, assuming that you can get the units sorted out, the icing is itself a cylinder of height 1/2 and radius 2. Its volume is given by:
I'm sure you can use this simple formula to get the right answer.