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1.  A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed is:
A. 12 cm3B. 15 cm3
C. 16 cm3D. 20 cm3

2.  In a shower, 5 cm of rain falls. The volume of water that falls on 1.5 hectares of ground is:
A. 75 cu. mB. 750 cu. m
C. 7500 cu. mD. 75000 cu. m

3.  A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is: 
A. 720B. 900
C. 1200D. 1800

4.  66 cubic centimeters of silver is drawn into a wire 1 mm in diameter. The length of the wire in meters will be: 
A. 84B. 90
C. 168D. 336

5.  A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is: 
A. 3.6 kgB. 3.696 kg
C. 36 kgD. 36.9 kg

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