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How many bricks each measuring 35 cm × 12.5 cm × 6 cm will be needed to construct a wall 9 m long, 7 m high and 32.5 cm thick?

How many bricks each measuring 35 cm × 12.5 cm × 6 cm will be needed to construct a wall 9 m long, 7 m high and 32.5 cm thick? Correct Answer 7800

Given:

Bricks measurement (35 cm × 12.5 cm × 6 cm)

Wall measurement (9 m × 7 m × 32.5 cm)

Formula used:

Volume of wall = n × Volume of one brick

n = number of bricks

Calculation:

Volume of wall = (Length × Breadth × Height)

= (900 cm × 700 cm × 32.5 cm)

= 20475000 cm3

Volume of Bricks = (Length × Breadth × Height)

= (35 cm × 12.5 cm × 6 cm)

= 2625 cm3

Number of bricks = volume of wall/volume of bricks

= 20475000/2625

= 7800

∴ Number of bricks are 7800.

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