Question

PLEASE SOLVE IT NO SPAM❌❌


2. How many bricks of size 22 cm ×10 cm × 7 cm are required to construct a wall 11 m long, 3.5 m high and 40 cm thick, if the cement and sand used in the construction occupy (1/10)th part of the wall?​

Answer 1

Answer:

Volume of 1 brick (cuboid)

= 22 × 10 × 7 = 1540cm^3

Volume of Brick left in wall

= 1100 × 350 × 40 - (1/0)(1100 × 350 × 40)

= 1100 × 350 × 40 [ 1 - 1/10]

=15400000 × 0.9

= 13860000 cm^3

NO. OF BRICKS = 13860000 ÷ 1540

= 9000