Question

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.

Answer 1

area of lane = l*b= 150*9=1350m²
area of brick=22.5*7.5=168.75cm²=0.016875m²
number of bricks required=area of lane / area of brick=1350/0.016875m²
                                        =8000 bricks
        so, 8000 bricks are required
                     

                   THUMBS UP!!!!!

Answer 2

Hi friend,

Length of the floor=150m=150000cm
Breadth of the floor=9m=900cm
Area of the floor=L*B
=150000*900
=135000000

Length of the brick=22.5cm
Breadth of the brick=7.5
Area of the brick= L*B
=22.5*7.5
=168.75

No of bricks required= 168.75÷135000000
=8000

Hope it helped you.....................