Question

A solid is in form of cylinder with hemispherical ends. the total height of the solid is 20cm and the diameter of the cylinder is 7cm.Find the total volume of the solid

Answer 1

cylinder:

height=20-7=13cm

radius=7/2cm

hemisphere:

radius=7/2cm

total volume= volume of cylinder+ 2 volume of hemisphere

                       = 22/7×7/2×7/2×13 + 2×2/3×7/2×7/2×7/2

                       = 525.1cm3<approx.>