How many bricks of 20cm*10cm*10cm are required to build a wall of 12m long and 30cm wide ??
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Area of brick = Length×breadth× height
(As It is in cuboidal shape)
=> 20×10×10 = 2000cm
Area of wall = Length×Breadth
(As It is in rectangular shape)
=> Length = 12m = 1200cm
Breadth = 30cm
= 1200×30 = 36000cm
Bricks required to build the wall = area of wall ÷ Area of brick.
36000÷ 2000 = 18 Bricks.
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