Question

how many bricks will be required to build a wall of 8m long,6m height and 22.5cm thick , if each brick measures 25cm by 11.25cm by 6cm​

Answer 1

To find the no. of bricks first we need to find the volume of the wall and that of each brick.
So,
As we know,
Volume =lenght×breadth×height
Therefore,
Volume of the wall=800cm×600cm×22.5(metre is converted into cm)
=10800000 cubic.cm
Now,
Volume of each brick=25cm×11.25cm×6cm
=1687.5 cubic.cm
So,Now,
No. of bricks=Volume of the wall÷Volume of
each brick
=10800000÷1687.5
=6400 bricks
Ans:6400 bricks are required.