Question

How many bricks, each of size 25 cm × 13.5cm × 6 cm, will be required to build a wall 8 m long, 5.4 m high and 33cm thick?

Answer 1

We know that volume of cuboid = length × breadth × height

Volume of the brick = 25 × 13.5 × 6 = 2025 cm³

Volume of the wall = 800 × 540 × 33= 14256000 cm³

Therefore, total number of bricks required

=Volume of the wall/ volume of the each brick

= 1425000/2025

= 7040 bricks