SOLUTION: A right circular cylinder with a diameter D = 21 cm and a height h = 34 cm has a hole with a diameter d = 8 cm drilled through its center. The approximate volume of the cylinder wi

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Question 844805: A right circular cylinder with a diameter D = 21 cm and a height h = 34 cm has a hole with a diameter d = 8 cm drilled through its center. The approximate volume of the cylinder with the hole drilled through the center would be ________ cu cm.
what is the formula for this?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A right circular cylinder with a diameter D = 21 cm and a height h = 34 cm has a hole with a diameter d = 8 cm drilled through its center.
The approximate volume of the cylinder with the hole drilled through the center would be ________ cu cm.
:
radius of the cylinder: 21/2 = 10.5 cm
radius of the hole: 8/2 = 4 cm
:
The hole volume is also a cylinder, subtract the vol of the hole from the vol of the cylinder
V = pi%2A10.5%5E2%2A34 - pi%2A4%5E2%2A34