how many bricks are required to build a wall of 15 m in length 12 m in height and 20 cm in thickness if the brick is 36cm long 25 cm wide and 10cm thick?
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number of bricks required to build a wall = volume of wall / the thickness of brick
=15×12×20 m / 36×25×10 cm
=3600/90
= 40 bricks
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