Find the number of bricks, each measuring 24 cm × 12 cm × 8 cm, required to construct a wall 24 m long, 8 m high, and 60 cm thick if 10% of the wall is filled with mortar?
45000
The correct answer is Option 3 i.e. 45000.
The volume of the wall = length × breadth × height
⇒ 2400 × 800 × 60 = 115200000 cm3
10% of the wall is filled with mortar then 90% is brick volume
⇒ 90% of 115200000 = 103680000 cm3
Volume of one brick = 24 × 12 × 8 = 2304 cm3
Number of bricks = 103680000/2304 = 45000
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Important Questions from Mensuration
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