Math, asked by Ankit2713, 9 months ago

To construct a wall 20 m long, 0.6 m wide and 5 m high, bricks of dimensions 25 cm x 15 cm x 9 cm each are used. If the mortar occupies 1/10th of volume of the wall, find the number of bricks used.​

Answers

Answered by Anonymous
5

According to the question :

☆ Volume of the wall = 20 × 0.6 × 5

=> 60 m.

☆ Volume occupied by the brick = 1 / 10 of the volume of the wall

=> 1 / 10 × 60

=> 6 m.

☆ Volume of 1 brick = 25 / 100 × 15 / 100 × 9 / 100

=> 1 / 4 × 3 / 20 × 9 / 100

☆ Bricks used = volume occupied by the brick / volume of 1 brick

=> 6 / ( 1 / 4 × 3 / 20 × 9 / 100 )

=> 6 / ( 4 / 1 × 20 / 3 × 100 / 9 )

=> 160 × 100 / 9

=> 1777.77

=> appro.1778 bricks.

The number of bricks used = 1778 bricks.

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