Quantitative Apitude-Volume & Surface Area
Quantitative Apitude-Volume & Surface Area
91. 66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be:
- 84
- 90
- 168
- 336
92. 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:
- 3.6 kg
- 3.696 kg
- 36 kg
- 36.9 kg
93. A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is:
- 12 kg
- 60 kg
- 72 kg
- 96 kg
94. 50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 m3, then the rise in the water level in the tank will be:
- 20 cm
- 25 cm
- 35 cm
- 50 cm
95. A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
- 4830
- 5120
- 6420
- 8960
96. The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.
- 3 : 7
- 7 : 3
- 6 : 7
- 7 : 6
97. A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:
- 90 cm
- 1 dm
- 1 m
- 1.1 cm
98. A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
- 2 : 1
- 3 : 2
- 25 : 18
- 27 : 20
99. How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?
- 5600
- 6000
- 6400
- 7200