R d sharma solutions mathematics class 9 Solutions for Chapter 19 surface area and volume of a right circular cylinder

Exercises in Chapter 19 surface area and volume of a right circular cylinder Grade 9

Surface Area And Volume Of a Right Circular Cylinder Exercise 19.1

Surface Area And Volume Of a Right Circular Cylinder Exercise 19.2

Questions in Surface Area And Volume Of a Right Circular Cylinder Exercise 19.1

In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter 5cm. Find the total radiating surface in the system.

A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of Rs 12.50 per m2.

It is required to make a closed cylindrical tank of height 1 m and the base diameter of 140 cm from a metal sheet. How many square meters of the sheet are required for the same?

A solid cylinder has a total surface area of 462 cm2,Its curved surface area is one-third of its total surface area. Find the radius and height of the cylinder.

Questions in Surface Area And Volume Of a Right Circular Cylinder Exercise 19.2

A soft drink is available in two packs- (i) a tin can with a rectangular base of length 5 cm and width 4 cm, having a height of 15 cm and (ii) a plastic cylinder with circular base of diameter 7 cm and height 10 cm, Which container has greater capacity and by how much?

The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter is 28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if 1 cm3 of wood has a mass of 0.6 gm.

If the lateral surface of a cylinder is 94.2 cm2 and its height is 5 cm, find:

i) radius of its base

(ii) volume of the cylinder

[Use π = 3.141]

A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7 cm. If the

bowl is filled with soup to a height of 4 cm, how much soup the hospital has to prepare daily to serve 250 patients?

The radii of two cylinders are in the ratio 2 : 3 and their heights are in the ratio 5 : 3. Calculate the ratio of their volumes and the ratio of their curved surfaces.

The ratio between the curved surface area and the total surface area of a right circular cylinder is 1:2. Find the volume of the cylinder, if its total surface area is 616 cm2.

The curved surface area of a cylinder is 1320 cm2 and its base had diameter 21 cm. Find the height and volume of the cylinder.

A rectangular sheet of paper, 44 cm x 20 cm, is rolled along its length of form cylinder. Find the volume of the cylinder so formed.

The curved surface area of cylindrical pillar is 264 m2 and its volume is 924 m3. Find the diameter and the height of the pillar.