# Find the number of bricks, each measuring 24 cm x 12 cm x 8 cm,required to construct a wall 24 m long,8 m high and 60 cm thick,if 10% of the wall is filled with mortar?

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by pepper

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by pepper

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Area of wall = 2400×800×6000cm³

Area of wall occupied by bricks =90% of 2400×800×6000

=2400×800×600×9

No.of bricks = Area of wall occupied by bricks ÷ Area of bricks

= (2400×800×600×9) ÷ (24×12×8)

=4000000 bricks

Volume of bricks = 90%

of the volume of the wall =[(90/100)*2400 *800 * 60]

Volume of 1 brick = (24 x 12 x 8)

Number of bricks=(90/100)*(2400*800*60)/(24*12*8)=45000