Question

How many bricks, each of dimension 25 cm ×16 cm × 10 cm will be needed to build a wall 24m long 6 m high and 0.4 my thick.

Answer 1

volume of wall =2400×600×40
volume of brick=25×16×10
no. of bricks=2400×600×40÷25×16×10
=14400.

Answer 2

No. Of brick = volume of wall/ volume of brick
=2400×600×40/25×16×10=
=13400