Question

How many bricks having a length of 20cm,breadth of 10cm and height of 6cm will be needed to build a wall having a lenght of 3m,thickness of 1m and height 2m.

Answer 1

Answer:

volume of brick =l×b×h

= 20×10×6

=1200 cu.cm

and,

volume of wall = l×b×h

=300×100×200

=6000000 cu.cm

thus,

no. of required bricks = 6000000

cu.cm/1200 cu. cm

=5000 bricks