Answer :

Given: Bricks each measuring (25 cm × 11.25 cm × 6 cm)


A wall with dimensions (8 m × 6 m × 22.5 cm)


We know that the Brick and wall are in the shape of a Cuboid.


Volume of a Brick and wall is given by: l × b × h (here l,b,h are the length , breadth, height of the wall and brick)


Let V1 be the volume of the Wall.


V1 = l × b × h = 800 × 600 × 22.5 ( 8 m = 800cm and 6 m = 600cm)


V1 = 10800000 cm3


Let V2 be the volume of a Brick.


V2 = l × b × h = 25 × 11.25 × 6


V2 = 1687.5 cm3


Let ‘n’ be the number of Bricks required to build the Wall.


V1 = n × V2


10800000 = n × 1687.5


n = = 6400


n = 6400


That is, 6400 bricks are required to build the wall.

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