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?

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- Mar 22nd 2010, 08:46 PMreiwardCylinder
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?

- Mar 23rd 2010, 02:35 AMGrandad
Hello reiwardAre you sure you have the units right? You have mixed cm and inches.

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:

$\displaystyle V = \pi r^2 h$I'm sure you can use this simple formula to get the right answer.

Grandad