Скачать или смотреть #4. Exercise 13.2 (Q 1- 5) | Class 9 Maths NCERT | Chapter 13-Volume and Surface Area |

EXERCISE 13.2
1. The CSA of a cylinder of height 14 cm is 88 cm2. Find the diameter of the base of the cylinder.

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

3. A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm Find its
(i) inner curved surface area
(ii) outer curved surface area
(iii) total surface area

4. The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m2

5. 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.


Mukesh Agarwal
RANI SATI CLASSES