Question

Q 22. How many bricks will be required for a wall 8 m long, 6 m high and 22.5 cm thick, if each
brick measures 25 cm x 11.25 cm x 6 cm?​

Answer 1

Step-by-step explanation:

Area of wall = 8×6×0.225 = 10.8 m²

Area of a brick = .25×.1125×.06 = .0016875 m²

n×Area of brick = Area of wall

n=Are of wall∕Area of brick

= 10.8/.0016875

= 6400

Answer 2

Answer:

6400 required

Step-by-step explanation:

Make metre into Centimeters

Volume of cuboidal Wall = L x B x H

= 800 x 600 x 22.5

= 1,08,00,000 cm^3

Volume of Cuboidal Brick = L x B x H

= 25 x 11.25 x 6

= 1687.5 cm^3

Number of Bricks Required = 1,08,00,000 ÷ 1687

= 6400 bricks