Question

How many bricks are required to build a wall of height $2.88$ m and width $50$ cm if the length of each brick is $12$ cm and breadth is $10$ cm?

Answer 1

Given height of wall needed $=2.88$m

Width of wall needed $=50$cm $=0.5$m

Given length of $1$ brick $=12$cm

Breadth of $1$ brick $=10$cm

Area of $1$ brick $=12\times 10=120c{m}^2$

Area of wall needed $=2.88\times 0.5$

Area $=14.40m^2$

Now number of bricks needed $=\frac{Areaofwall}{Areaofbrick}$

No. of bricks needed $=\frac{14.40\times {10}^4}{120}=\frac{1440\times 100}{120}$

$[$number of bricks needed $=1200$].