Q5 of 14 Page 309

How many bricks will be required to build a wall of 8 m long, 6m height and 22.5 cm thick, if each brick measures 25 cm by 11.25 cm by 6 cm?

Measurements of Wall:

Length = 800cm Breadth = 600cm and Height = 22.5cm


Volume of wall = Length × Breadth × Height


= 800 × 600 × 22.5


Measurements of Brick:


Length = 25cm Breadth = 11.25cm and Height = 6cm


Volume of wall = Length × Breadth × Height


= 25 × 11.25 × 6


Number of bricks required build a wall =


=


= 32 × 100 × 2


= 64 × 100


= 6400


Hence, 6400 bricks are required to build the wall.


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