Question

-Find the volume of a cuboid of dimensions 18 cm x 120 mm x 150 mm in cu cm.
-A brick measures 20 cm x 10 cm x 3.5 cm. How many bricks will be required for a wall of dimensions 25 mx 2 mx 0.35 m ? ​

Answer 1

Step-by-step explanation:

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.]