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Question
How many bricks, each measuring (25 cm × 11.25 cm × 6 cm), will be required to construct a wall (8 m × 6 m × 22.5 cm)?
Options
8000
6400
4800
7200
Solution
6400
Volume of the wall = (800 xx 600 xx 22.5) cm3
Volume of each brick = (25×11.25×6) cm3
Number of bricks `= "Volume of the wall"/"Volume of each brick "`
`= (800xx600xx22.5)/(25xx11.25xx6)`
= 6400
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