How many bricks of size 22 cm × 10 cm × 7 cm are required to construct a wall 11m 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?

Solution:

Volume of the wall = 11× 3.5 × 0.4 = 15.4 m³

Net Volume of the wall = 15.4 - 10% of 15.4 = 13.86 m³

The volume of the Brick is = 0.22 × 0.1 × 0.07 = 0.00154m³

Number of bricks required to construct the wall = 13.86/0.00154 = 9000

Number of bricks required is 9000

✦ Try This: How many bricks of size 22 cm × 10 cm × 7 cm are required to construct a wall 22m long, 7.0 m high and 40 cm thick, if the cement and sand used in the construction occupy (1/10)th part of the wall?

Volume of the wall = 22× 7.0 × 0.4 = 61.6 m³

Net Volume of the wall = 61.6 - 10% of 61.6 = 54.44m³

The volume of the Brick is = 0.22 × 0.1 × 0.07 = 0.00154m³

Number of bricks required to construct the wall = 54.44/0.00154 = 36000

Number of bricks required is 36000

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 11

NCERT Exemplar Class 8 Maths Chapter 11 Problem 117

How many bricks of size 22 cm × 10 cm × 7 cm are required to construct a wall 11m 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?

Summary:

9000 bricks of size 22 cm × 10 cm × 7 cm are required to construct a wall 11m 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

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