Mathematics
How many bricks will be required for constructing a wall which is 16 m long, 3 m high and 22.5 cm thick, if each brick measures 25 cm x 11.25 cm x 6 cm ?
Surface Area, Volume, Capacity
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Answer
Given:
Length of the wall = 16 m
Breadth of the wall = 3 m
Height of the wall = 22.5 cm = 0.225 m
The volume of wall = length x breadth x height
= 16 x 3 x 0.225 m3
= 10.8 m3
Length of brick = 25 cm = 0.25 m.
Breadth of brick = 11.25 cm = 0.1125 m.
Height of brick = 6 cm = 0.06 m.
The volume of one brick = length x breadth x height
= 0.25 x 0.1125 x 0.06 m3
= 0.0016875 m3
Let a be the number of bricks.
Number of bricks =
⇒ a =
⇒ a =
⇒ a = 6,400
Hence, 6,400 bricks are required to construct the wall.
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