Question

please. answer..........​

Answer 1

Step-by-step explanation:

The number of bricks required is 27,000.

We have to find the number of bricks of dimensions 22 cm x 10 cm x 7 cm required to construct a wall 33 m long, 3.5 m high, and 40 cm thick if cement and sand used in construction occupy (1/10) of the wall.

As we know that the volume of the cuboid is given by = Length Breadth Height.

So, the volume of the wall = 33 m 3.5 m 40 cm

= (33 100) cm (3.5 100) cm 40 cm

= 3300 cm 350 cm 40 cm

= 46200000 .

Now, it is stated that the cement and sand used in construction occupy (1/10) of the wall.

So, the actual volume of the wall = Volume of the wall - ( Volume of the wall)

=

= 46200000 - 4620000

= 41580000

Now, the volume of one brick = 22 cm 10 cm 7 cm

= 1540

So, the number of bricks required =

=

= 27,000 bricks.

Hence, the number of bricks required is 27,000.