Question

a Wall of length 10 metre was to be built across an open ground the height of the wall is 4.8 metre and thickness of the wall is 24 cm one tenth of the wall is occupied by cement if this what is to be build up with brakes whose dimensions are 24cm into 12 cm into 9 cm how many bricks would be required

help or gae ​

Answer 1

Answer:

length of the wall, l = 10 m = 100 cm

Breadth of the wall, b = 42 m = 4200 cm

Height of the wall, h = 5 m = 500 cm

Volume of the wall = l × b × h = 100 cm × 4200 cm × 500 cm = 21000000 cm3

Dimension of the brick = 42 cm × 12 cm × 10cm

∴ Volume of each brick = 42 cm × 12cm × 10 cm = 5040 cm3

Let the number of bricks required be n.

n × Volume of each brick = Volume of the wall

therefore, n= vol of the wall/ vol of each brick

n= 21000000cm³/5040cm³

n= 4166.67

Thus, the number of brick required is 4166.67