How many bricks are required to construct a wall 1900 cm long, 900 cm high and 18 cm wide?
Note: The measurement of a brick is 19 cm × 9 cm × 9 cm.

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Solution

Measurement of a brick : 19 cm x 9 cm x 9 cm
The length of the wall = 1900 cm
Length of each brick = 19 cm
Number of bricks required lengthwise = 1900 ÷ 19 = 100

The height of the wall = 900 cm
Height of each brick = 9 cm
Number of bricks required height wise = 900 ÷ 9 = 100

The breadth of the wall = 18 cm
breadth of each brick = 9 cm
Number of bricks required breadthwise = 18 ÷ 9 = 2

So the total number of bricks required = 100 x 100 x 2 = 20,000

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