Question from rustom, a student:

Two vertical conical tanks (both inverted) have their vertices connected by a short horizontal pipe.
One tank, initially full of water, has an altitude of 6 ft. and a diameter of base 7 ft.
The other tank, initially empty, has an altitude of 9 ft., and a diameter of base 8 ft.
If the water is allowed to flow through the connecting pipe, find the level to which
the water will ultimately rise in the empty tank (Neglect the water in the pipe.)

I did not understand how the question works, whether the volume of the water from the
smaller will all go to the bigger conical tank. Please explain what quantity is unknown in the
question. Answer = 5.1510 ft