Question

9. How many bricks, each of size 25 cm x 13.5 cm x 6 cm, will be required to build a wall 8m
long, 5.4 m high and 33 cm thick?
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Answer 1

Step-by-step explanation:

volume of wall÷volume of bricks

Answer 2

Step-by-step explanation:

We know that volume of cuboid = length × breadth × height

So,

Volume of the brick =25×13.5×6=2025 cm

Volume of the wall =800×540×33=14256000 cm

Therefore, total number of bricks required =

$\frac{volume \: of \: the \: wall }{ volume \: of \: each \: brick\: } \\ = \frac{1425000}{2025} \: \: \: \: \: \: \: \\ = 7040 \: bricks$