Question

How many bricks will be required for a wall which is $8$ m long, $6$ m high and $22.5$ cm thick if each brick measures $25cm\times 11.25cm\times 6cm$ ?

Answer 1

Dimention of Wall$;$

$l=8m=800cm$

$h=6m=600cm$

$b=22.5cm$

volume of the wall $=lbh=800\times 600\times 22.5$

$=10800000c{m}^3$

Dimention of brick$;$

$l=25cm$

$b=11.25cm$

$h=6cm$

volume of brick $=lbh$

$=25\times 11.25\times 6$

$=1687.5c{m}^3$

therefore number of bricks$=$volume of wall/volume of $1$ brick

$=\frac{10800000}{1687.5}$

$=6400$ bricks

Therefore number of bricks are $6400$.