Question

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Answer 1

Answer:

Volume of one stair-step =25×12×50=25×12×50

=15000 cm3=15000 cm3

Volume of one brick =12.5×6.25×4=12.5×6.25×4

=312.5 cm3=312.5 cm3

∴∴ Number of bricks made by one stair-step =Volume of one stair-stepVolume of one bricks=Volume of one stair-stepVolume of one bricks

=15000312.5=15000312.5

=48=48 bricks

∴∴ Number of bricks's made by three stair-step =3×48=3×48

=144=144 bricks

Step-by-step explanation:

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