Question

how many bricks each 25 cm long 16 cm wide and 7.5 CM thick will be needed to build a wall 5m long,3m broad and 80cm high?


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Answer 1

Step-by-step explanation:

We know that,

Volume of cuboid = Length × Breadth × Height

Firstly,

Volume of the brick = 25 × 13.5 × 6

= 2025 cm3

Now,

Volume of the wall = 800 × 540 × 33

= 14256000 cm3

Hence,

Total number of bricks required =

=

= 7040 bricks

Answer 2

$\huge{\mathfrak{\pink{Question:-}}}$

⏩How many bricks each 25 cm long 16 cm wide and 7.5 CM thick will be needed to build a wall 5m long,3m broad and 80cm high?

$\huge{\mathfrak{\red{Answer:-}}}$

Given:-

❇Dimensions of the brick

L=25cm

B=15cm

H=7.5cm

❇Dimension of the wall

L=5m =5×100=500cm

B=3m =3×100=300cm

H=80cm

........................................................

To find :-

The number of bricks to build the wall.

........................................................

Solution :-

The volume of the brick = vol. of rectangle

=L X B X H

=(25×16×7.5)cm

=3000 cm³

The volume of the wall= vol. of rectangle

=L X B X H

=(500×300×80)cm

=12000000 cm³

So,the no of bricks required to build the wall =

= Vol. of the wall

Vol. of brick

= 12000000

3000

= 4000.

So,the no of bricks required to build the wall = $\boxed{\huge{4000.}}$

..............................................

Important formulae :-

Volume of cuboid =L×B×H

......

#Answer With Quality

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