Question

a wall of length and height as 5 m 4 m and 3.5 m is built using brick measuring 40 cm 25 cm 20 cm find the number of bricks required​

Answer 1

Answer:

no. of bricks=volume of wall/volume of one bricks

Step-by-step explanation:

=500*400*350/40*25*20=3500 bricks

Answer 2

Answer:

The numbers of required bricks in the wall is 3500.

Step-by-step explanation:

Given that:

• Length of bricks = 40 cm
• Breadth of bricks = 25 cm
• Height of bricks = 20 cm

To find:

• The numbers of bricks required in the wall.

Formula to know:-

volume of cuboid or cube = Length×Breadth×Height

Solution:

Volume of bricks = l×b×h

=> 40cm×25cm×20cm

=> $\fbox{${{\mathrm{20}}{\mathrm{,}}{\mathrm{000}}\hspace{0.33em}{cm}^{3}}$}$

Length of Wall = 5m×100 => 500m

Breadth of Wall = 4m×100 => 400m

Height of Wall = 3.5m×100 => 350m

Volume of Wall = l×b×h

=> 500×400×350

=> $\fbox{${\mathrm{70}\mathrm{,}\mathrm{000}\mathrm{,}\mathrm{000}{cm}^{3}}$}$

$the \: volume \: of \: bricks \: required = \frac{volume \: of \: wall}{volume \: of \: bricks} \\ = > \frac{70000000 }{20000} \\ = > 3500$

Hence, the numbers of required bricks is 3500 Ans.