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

Answer 1

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