Question

the dimensions of a wall is 30m*5m*20cm. it contains three windows each if 2m*1.5m. how many bricks of size 20cm*10cm*5cm are required to build the wall leaving 10% of space for the cement work? also find the cost of bricks at the rate of rs 9000 per 1000 bricks.

Answer 1

Answer:

Dimension of brick are =20cm×10cm×5cm

volume of 1 brick =20×10×5=1000cm

3

Dimension of wall =10m×15m×0.2m

volume of wall =10×15×0.2=30m

3

now no. of brick requried to make wall =

volumeof1brick

volumeofwall

no. of bricks =

1000m

3

30m

3

=

1000

30

×10

6

=30×10

3

[no. of bricks =30,000 bricks.]

solution