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Question

How many bricks, each of size 25 cm × 13.5 cm × 6 cm, will be required to build a wall 8 m long, 5.4 in high and 33 cm thick?


Solution

Length of wall (l)=8 m=800 cm

height (h)=5.4 m =540 cm

Width (b)=33 cm

Volume of wall =l×b×h

=800×540×33cm3

=14256000cm3

Volume of one brick =25×13.5×6cm3

=2025cm3

No. of bricks =142560002025=7040


Mathematics
Secondary School Mathematics VIII
Standard VIII

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