Question

A lane 150 M long and 9 M wide is to be paved with bricks each measuring 22.5 CM by 7.5 cm find the number of bricks required

Answer 1

Hey friend...!!!

length of lane = 150 m
width = 9 m
so, area = length x breadth
= 150 x 9 m sq
= 1350 m sq

length of a brick = 22.5 cm = 0.225 m
width = 7.5 cm = 0.075 m
so, area = 0.225 x 0.075
= 0.016875 m sq

so, number of bricks required
= 1350/0.016875
= 80,000

☆ Hope it helps...!!! ☆

Answer 2

Area of lane = l × b
                    = 150 × 9 = 1350 m²
Area of brick = 22.5 × 7.5 = 168.75 cm²
                     = 168.75 / 100 ×100
                     =0.016875 cm²
Number of bricks required = area of lane/area of bricks
                                          = 1350/0.016875
                                          = 1350×1000000/16875
                                          = 80000 bricks
80000 bricks are required 
             
        hope it is helpful for u