A room is 12m by 10 m by 10 m. Find the cost of covering its floor with bricks of 20 cm by 6 cm, if the cost of one thousand bricks is ₹300.
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area of the floor will be 12×10=120 in metres sq
now .area of single brick will be 0.2×0.06=0.012 in metres sq
so.1 brick covers area of 0.012 m^2
so to cover 120 m^2 area ..
no.of bricks required will be 120/0.012=10000 bricks.
now cost of 1000 bricks is 300..
so cost of 10000 bricks will be =300×10000/1000=3000rs
now .area of single brick will be 0.2×0.06=0.012 in metres sq
so.1 brick covers area of 0.012 m^2
so to cover 120 m^2 area ..
no.of bricks required will be 120/0.012=10000 bricks.
now cost of 1000 bricks is 300..
so cost of 10000 bricks will be =300×10000/1000=3000rs
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