Question

7. The lateral surface area of a cylinder is 94.2 cm' and its height is 5 cm.
Find (i) the radius of its base and (ii) its volume. (Take it = 3.14.)
8. The capacity of a closed cylindrical vessel of height 1 m is 15.4 litres.
Find the area of the metal sheet needed to make it.
9. 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 cm of wood has a mass of 0.6 g.
10. In a water heating system, there is a cylindrical pipe of length 28 m
and diameter 5 cm. Find the total radiating surface in the system.
11. Find the weight of a solid cylinder of radius 10.5 cm and height 60 cm
if the material of the cylinder weighs 5 g per cmº.
12. The curved surface area of a cylinder is 1210 cm? and its diameter is
20 cm. Find its height and volume.
13. The curved surface area of a cylinder is 4400 cm and the circumference
of its base is 110 cm. Find the height and the volume of the cylinder.
14. The radius of the base and the height of a cylinder are in the ratio 2:3.
If its volume is 1617 cm", find the total surface area of the cylinder.
tolourface area of a cylinder is 462 cm². Its curved surface area is​

Answer 1

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