Q9 of 94 Page 222

How many bricks, each of size 25 cm x 13.5 cm x 6 cm, will be required to build a wall 8 m long, 5.4 m high and 33 cm thick?

We know that,

Volume of cuboid = Length × Breadth × Height


Firstly,


Volume of the brick = 25 × 13.5 × 6


= 2025 cm3


Now,


Volume of the wall = 800 × 540 × 33


= 14256000 cm3


Hence,


Total number of bricks required =


=


= 7040 bricks


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