a. lane 150m long and 9m wide is to be paved with bricks. each. measuring 22.5 cm by 7.5cm find the number of bricks required.
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Answered by
1
just divide 150 ×9/22.5×7.5
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Number of bricks required =
area of lane/area of bricks
1meter=100cm
therefore 150m=15000cm
and 9m =900cm
area of lane = 15000 x 900= 13500000cm^2
area of brick= 22.5 x 7.5= 168.75cm^2
Number of bricks
= 13500000/168.75
=80000
The number of bricks required to pave the lane is 80,000.
Hope this helps you
area of lane/area of bricks
1meter=100cm
therefore 150m=15000cm
and 9m =900cm
area of lane = 15000 x 900= 13500000cm^2
area of brick= 22.5 x 7.5= 168.75cm^2
Number of bricks
= 13500000/168.75
=80000
The number of bricks required to pave the lane is 80,000.
Hope this helps you
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