The outer radius and the inner radius of a hollow cylinder are `(3 - x) cm and (2-x) cm.` What is its thickness?

The slant height, outer radius and inner radius of a cone frustum are 2a cm, (a + b) cm and (a - b) cm. What is its curved surface area?

The external radius and the length of a hollow wooden log are 16 cm and 13 cm respectively. If its thickness is 4 cm then find its T.S.A.

The inner and outer radii of a hollow cylinder are 15 cm and 20 cm, respectively. The cylinder is melted and recast into a solid cylinder of the same height. Find the radius of the base of new cylinder.

The inner and outer radii of a hollow cylinder are 15 cm and 20 cm, respectively. The cylinder is melted and recast into a solid cylinder of the same height. Find the radius of the base of new cylinder.

If the difference between the outer radius and the inner radius of a ring is 14 cm, then what is the difference between is outer circumference and innner circumference?

A solid sphere of radius 6 cm is melted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, then find the thickness of the cylinder.

The difference between the outer and the inner curved surface areas of a hollow cylinder, 14cm long, is 88sq. cm. Find the outer and the inner radii of the cylinder, given that the volume of metal used is 176cu.cm.