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

Posted by Tanushree Jaiswal 2 years, 3 months ago

CBSE > Class 08 > Mathematics

4 answers

Sia ? 2 years, 3 months ago

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.

1Thank You

Smriti Gupta 2 years, 3 months ago

1280

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Prabhat Kumar 2 years, 3 months ago

Length of Brick = 25cm Breadth of Brick = 15 cm Height of Brick = 8 cm Volume of cuboidal Brick = lxbxh = 25cm x 15cm x 8cm = 3000 cm³ Length of wall = 32 m = 3200 cm Breath of wall = 3 m = 300 cm Height of wall =40cm Volume of wall = lxbxh = 3200cmx300 cm x 40cm = 3840000 cm³ No.of Brick = volume of wall / volume of 1 brick =3840000 cm³/3000 cm³ = 1280 Bricks Answer.

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Anshuman Jha 2 years, 3 months ago

12800

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