Math: Geometry

Joe is making a toy from a rectangular block of wood. He drills two holes, each with diameter 1.4 cm, through the block. The block of wood has length 15 cm, width 8 cm, and height 5 cm.
a)What is the volume of the block before the holes are drilled?
b)What is total volume removed by the drilled holes?
c)What is the volume of the block after the holes are drilled?

I honestly don't know how to set this up.

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1. a) the block was (15)(8)(5) cm^3 = .....

you have to know the volume of a cylinder , which is
v = π r^2 h

You don't say in which direction the holes are drilled, so I can't continue

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posted by Reiny

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