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1.The area of three adjacent faces of a cube is a, b and c. The volume is V .What is the appropiate relation between V and a,b,c?

V

V=abc

V

V

2) The height of a cone is 16 cm and Slant height is 20 cm. Its radius is ?

12 cm

13 cm

14 cm

10 cm

3. In a cylinder, radius is doubled and height is doubled, curved surface area will be?

become 2 times

become 4 times

remains same

become 1/2 times

4. The dimensions of a cuboid are 50 cm x 40 cm x 10 cm. Its volume in litres is:?

10 litres

20 litres

40 litres

30 litres

5. A Home choclate maker has one spherical chocalate of radius 10cm. With the same amount of material, how many small sphere of choclates of radius 2.5 cm can be made?

16

256

64

None of these

6.Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water?

.31 litres

.2 litres

1 litres

None of these

7. A right triangle with sides 3 cm, 4 cm and 5 cm is revolved about the side 3cm to form a cone.Which of these is false?

Curved surface of cone=20π

Total surface area =36π

Volume=80π/3

None of these

8. A cube of side 42 cm contains a sphere touching its sides. Find the volume of the gap in between?

35280 cm

35286 cm

34328 cm

none of these

9. Mcdonalled provides colddrink to the consumer daily in a cylindrical glasses of radius 7 cm. If the glass is filled with Cocacola upto an height of 12 cm, find how many litres of cocacola is needed to serve 100 consumer?

164 litres

184.8 Litrss

200 litres

160.5 litres

10.The volumes of the two spheres are in the ratio 64 : 27. Find the ratio of their surface areas,

4:3

16:9

64:27

None of these

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