KK.5 Solid of revolution of trapezoid

As shown in the figure, there is a trapezoid ABCD whose sides AB = 5 cm, BC = 4 cm and CD = 8 cm.
Find the volume of the solid which is made by rotating the trapezoid one time around the side AB as a rotation axis.
Pi is assumed to be 3.14.














Answer
351.68 cm3

Reference