Find its radius and its height.

2)6. The cost of painting the total surface of a closed cylindrical tank at the rate of 50 paise per sq.dm is Rs 1078.The height of the tank is six times the radius of the base of the tank. Find its curved surface area.

3. In a hollow cylinder, its inner circumference is 132cm.If its thickness is 7 cm, find its outer circumference

4. In a hollow cylinder, the inner diameter is 40cm.Its thickness is 5 cm. Find the area of the two rings [ use π = 3.14]

5. Outer circumference of a hollow cylinder is 176 m. Its thickness is 7cm.If its height is 70cm, find its total surface area.

6. How many metres of cloth 5m wide is required to make a conical tent, the radius of its base is 7m and its slant height is 25m

7. A reservoir is in the form of a cuboid. Its length is 20m.If 18 kl of water is removed from the reservoir, the water level goes down by 15cm.Find the width of the reservoir

8. A rectangular tank measuring 5m x 4.5m x 2.1m is dug in the centre of the field measuring 13.5m x 2.5 m. The earth dug out is spread evenly over the remaining portion of the field. How much is the level of field raised?

9. Circumference of the base of a conical tent is 88m.If its slant height is 30m, find the area of the canvas used to make the tent.

10. The circumference of the base of a 24 m height cone is 44m.Calculate the total surface area of the cone.

11. Area of the base of a cone is 154cm2.If its height is 24 cm, find its total surface area.