$$\mathrm{\ }$$a cylinder has a length of 15 feet and has a diameter of 8 feet. If a hole with a diameter of 6 feet, what is the volume of the cylinder after the hole was boared

We have the difference in the volume of the whole cylinder and the "removed" cylinder

15 *pi * (4^2 - 3^2) =

15 * pi * (7) =

105 pi cu ft =

about 329.87 cu ft