Question

How many bricks each measuring 45cm long, 11.25 cm wide, 6cm will be needed to build a wall 8m long, 6m high and 2.25 m thick.

Answer 1

No. of bricks needed=Vol. of wall/Vol. of brick

=800×600×225 cm/45×11.25×6

=108000000/3037.5

=1080000000/30375

=35555.55

=35556 Bricks