Question

Find tha number of bricks of size 20 cm *15 cm needed to cover tha path of 45cm *20cm ?

Answer 1

Answer:

2000

Step-by-step explanation:

Length of brick=25cm

breadth of brick =15cm

height of brick=10cm

volume of brick =length×breadth×height

=25cm×15cm×10cm

=3750cm

3

length of wall=6m=600cm

breadth of wall=0.5m=50cm

height of wall =2.5m=250cm

volume of wall=length×breadth×height

=600×250×50=7500000cm

3

the number of bricks required=

3750

7500000

=

375

750000

=2000

hence, number of bricks =2000

Answer 2

Step-by-step explanation:

The length of brick = 20cm

The breadth of brick = 10cm

So, The area covered by 1 brick = l×b = 20×10 = 200 cm².

The  length of a floor = 25m = 25×100 = 2500 cm.

The Width of a floor = 16m = 16×100 = 1600 cm

The Area of floor of the room = l×b = 2500×1600 = 40,00,000 cm².

So, The total no. of bricks those cover the total area of floor = 40,00,000÷200 = 20,000 Bricks

Given cost of each Brick = 12.50 rupees.

Total cost = 20,000×12.50 = 2,50,000 rupees.

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