WHAT IS THE VOLUME OF A PIPE WHOSE ONE END DIA IS 20 CM, ANOTHER SIDE DIA IS 30 CM AND LENGTH IS 500CM

Answer 1

assuming you are giving inside diameters, then the pipe is just a frustrum of a cone, whose base diameter is 30cm.

Since the diameter decreased by 10 cm in 500 cm, it will be zero after another 100 cm.

So, the volume of the pipe is the volume of a cone

base diameter 30 cm and height 1500 cm

minus the chopped-off top, which is a cone of

base diameter 20 cm and height 1000 cm.

Assuming you can find the volume of a cone, your way should now be clear.

Answer 2

cleared