Question

A wall is 8m long,4m high, and 22.5cm thick. how many bricks of length 25 cm, breadth 12.5 cm, and 8 cm high are needed to build the wall?

Answer 1

Volume of wall = lbh
=> V = (8 x 4 x 0.225) m^3
=> V = 7.2 m^3

Now,
Volume of Brick = lbh
=> V = 0.0025 m^3

Again,

No. of bricks = Volume of wall/Volume of Bricks

=> No. of bricks = (7.2/0.0025)
=> No. of bricks = 2880


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