Question

A brick measures 18 cm in length, 10 cm in breadth, and 3 cm in height. How many bricks will be used to make a wall of length 18 m, breadth 5 m, and height 6 m?

(a) 4000
(b) 5000
(c) 6000
(d) 7000

Answer 1

To make a wall of a certain size, we can calculate the volume of the wall and the volume of a single brick, and then divide the volume of the wall by the volume of a single brick to find the number of bricks needed.

option b is the correct

Step-by-step explanation:

To find the number of bricks needed to make a wall, we need to calculate the volume of the wall and the volume of a single brick.

The volume of the wall can be calculated by multiplying the length, breadth, and height of the wall: 18 m x 5 m x 6 m = 540 m³.

The volume of a single brick can be calculated by multiplying the length, breadth, and height of the brick: 0.18 m x 0.10 m x 0.03 m = 0.00054 m³.

To find the number of bricks needed, we divide the volume of the wall by the volume of a single brick: 540 m³ / 0.00054 m³ = 1,000,000 bricks.

Therefore, 1,000,000 bricks will be needed to make the wall.