Question

find the number of bricks of dimension 20 cm × 5 cm × 10 cm required to construct a Wall of dimensions 300 cm × 200 cm × 20 CM ​

Answer 1

Answer:

Area of Brick=Length*Breadth*Height

=20*5*10

=1000cm^2

Area of wall=Length*Breadth*Height

=300*200*20

=1200000cm^

Number of Bricks=1200000/1000

=1200 Bricks

Units cm square should be written.

Answer 2

Answer:

volume of brick= l×b×h

= 20×5×10

= 1000cm³

volume of wall= l×b×h

= 300×200×20

= 1200000cm³

number of bricks = volume of wall

volume of brick

= 1200000

1000

= 1200bricks