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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^{4}=abc
V=abc
V^{3}=abc
V^{2}=abc

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^{3} 35286 cm^{3} 34328 cm^{3} 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