The horizontal cross=section of a beer keg 4 ft tall is circular and the sides of the keg are parabolic. The diameter of the top and bottom is 2 ft and the diameter in the middle is 3 ft. Find the volume of the keg.

Question

The horizontal cross=section of a beer keg 4 ft tall is circular and the sides of the keg are parabolic.  The diameter of the top and bottom is 2 ft and the diameter in the middle is 3 ft.  Find the volume of the keg.

anonymous · Answer

V=pir^2

anonymous · Answer

This is a calculus question so would you just use that equation for the the diameters given and add them up using your equation?

anonymous · Answer

You need two different equations to make some king of a link; horizontal cross section, parabola are clues I think.