A wall is 8 m long , 4 m high , and 22.5 cm thick. How many bricks of length 25 cm, breadth 12,.5 cm, and 8 cm high are needed to build the wall?
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LENGTH OF WALL = 8M = 800
BREADTH OF WALL = 4M = 400
HEIGHT OF WALL = 22.5CM
VOLUME OF WALL = L×B×H
= 800×400×22.5 = 7200000CM³
VOLUME OF EACH BRICKS = L×B×H
= 25×12.5×8 = 2500CM³
NUMBER OF BRICKS REQUIRED FOR MAKING WALL = VOLUME OF WALL/VOLUME OF EACH BRICKS .
=7200000/2500 = 2880
BREADTH OF WALL = 4M = 400
HEIGHT OF WALL = 22.5CM
VOLUME OF WALL = L×B×H
= 800×400×22.5 = 7200000CM³
VOLUME OF EACH BRICKS = L×B×H
= 25×12.5×8 = 2500CM³
NUMBER OF BRICKS REQUIRED FOR MAKING WALL = VOLUME OF WALL/VOLUME OF EACH BRICKS .
=7200000/2500 = 2880
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