Question

How many bricks each 25cm by 15cm by 8cm are required for a wall 32m long 3m high and 40cm thick

Answer 1

Given
Dimensions of brick =25cmx15cmx8cm

The volume of brick =25x15x8

=3000cm³

The dimensions of wall =32mx3mx40cm

Let change the m in cm we have

Volume of wall =3200x300x40

=38400000cm³


Bricks required =volume of wall/ volume of one brick

=38400000/3000

=12800 bricks

This is ur ans hope it will help you

Answer 2

length of the wall=32m=3200cm, length of one brick=25cm.
therefore. Length -wise ,the no. of bricks required = 3200÷25 = 128

Similarly, height-wise, no. of bricks required=300÷15=20

Thickness-wise, no. of bricks required=40÷8=5

therefore . The bricks can be arranged in 128 layers , each containing 20 rows of bricks with 5 bricks in each row.

therefore. The no. of bricks required=120×20×5=12800.