A rectangular sheet of dimensions 25 cm `xx` 7 cm is rotated about its longer side. Find the volume and the whole surface area of the solid thus generated.

A rectangular strip 25 c m\ x\ 7c m is rotated about the longer side. Find the total surface area of the solid thus generated.

A right triangle with sides 6 cm, 8 cm and 10 cm is revolved about the side 8 cm. Find the volume and the curved surface of the solid so formed.

a rectangular sheet of paper 66cm by 24 cm is rolled along its length and a cylinder is formed ? Find total surface area of cylinder.

A solid is in the form of a cylinder with hemispherical ends. Total height of the solid is 19 cm and the diameter of the cylinder is 7 cm. Find the volume and total surface area of the solid.

Find total surface area of a solid hemi-sphere of radius 7cm.

A figure is formed by revolving a rectangular sheet of dimensions 7 cm xx 4 cm about its length. What is the volume of the figure thus formed?

A semi-circle of radius 17.5 cm is rotated about its diameter. Find the curved surface of so generated solid.