Question

A wall 9m long 6m high and 20cm thick, is to be constructed, using bricks of dimensions 30cm, 15cm and 10cm. How many bricks will be required.

Answer 1

First calculate the volume of wall
9*6*0.2=10.8
Then calculate the volume of one brick
0.3*0.15*0.1=0.0035
Divide the volume of wall by volume of one brick=(9*6*0.2)/(0.3*0.15*0.1)
=2400
So,2400 bricks are required to make the wall.

Answer 2

Answer:

Step-by-step explanation:

Given :-

Dimensions of wall :-

Length of the wall = 9 m = 9 x 100 cm = 900 cm

Height of the wall = 6 m = 6 x 100 cm = 600 cm

Breadth of the wall = 20 cm

Dimensions of Bricks :-

= 30 x 15 x 10 cm

Solution :-

Volume of the wall = 900 x 600 x 20 cm3 = 10800000 cm²

Volume of one Brick = 30 x 15 x 10 cm3 = 4500 cm³

Number of bricks required to construct the wall =  volume of wall/volume of one brick

Number of bricks required to construct the wall = 10800000/4500

Number of bricks required to construct the wall = 2400

Hence, 2400 bricks will be required.