A wall of length 40 m by 20 m is to be built with bricks of length 20 cm by 10 cm. How many bricks are required to built the wall.
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Answer:
4000 tiles
Step-by-step explanation:
Wall:
length = 40 × 100
= 4000 cm
breadth = 20 × 100
= 2000 cm
area = 4000 × 2000
= 8000000 cm
Tiles:
length = 20 cm
breadth = 10 cm
area = 20 × 10
= 200 cm
Number of tiles = 8000000 ÷ 200
= 40000
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