CHAPTER-13 SURFACE AREAS AND VOLUMES (SET-5)

Questions in this test

1. The ratio between the curved surface area and the total surface area of a right circular cylinder is 1:2, if the total surface area is 616 cm², then the volume of the cylinder is
2. In a cylinder, if the radius is halved and the height is doubled, then the volume will be
3. The number of coins 15 cm in diameter and 0.2 cm thick to be melted to form a right circular cylinder of height 10cm and diameter 4.5 cm is
4. The radius of a wire is decreased to one-third,if volume remains the same, the length will become
5. The diameter of a ruler, 1m long is 84 cm if it takes 500 complete revolutions to the level of a playground, the area of the playground is
6. The lateral surface area of a cylinder is
7. The height of a cone is 24 cm and the diameter of its base is 14 cm, the curved surface area of the cone is
8. The volume of the right circular cone of the height 12 cm and base radius 6 mc, is
9. How much cloth 2.5m wide will be required to make a conical tent having a base radius of 7m and height of 24m?
10. The volume of a cone is 1570 cm³ and its height is 15 cm. What is the radius of one ? $(use\ π = 3.14)$