Question

3. How many bricks each 25 cm long, 16 cm wide and 7.5 cm thick, will be required to build a terrace 5 m long, 3 m broad and 80 cm high?​​

Answer 1

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volume of brick=25×16×7.5

=3000cm cube

volume of the wall=500×3×80

=120000cm cube

no of bricks needed to build a wall=120000/3000=40

therefore,40 bricks are needed to build a wall

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Answer 2

Answer:

volume of brick=25×16×7.5

=3000cm cube

volume of the wall=500×3×80

=120000cm cube

no of bricks needed to build a wall=120000/3000=40

therefore,40 bricks are needed to build a wall

hope it helps you...!