a circular lawn is 50m in diameter. Around it on the side a foothpath 2.5m wide is to be made. find its cost at Rs 1.60 per square m.​

Question

a circular lawn is 50m in diameter. Around it on the side a foothpath 2.5m wide is to be made. find its cost at Rs 1.60 per square m.​

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Genesis 1 month 2021-08-16T20:42:05+00:00 1 Answer 0 views 0

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    2021-08-16T20:44:02+00:00

    Step-by-step explanation:

    Length = 24.5 m

    Breadth = 18 m

    ∴ Area of the rectangle = Length × Breadth

    = 24.5 m × 18 m

    = 441 m2

    (ii) Length = 12.5 m

    Breadth = 8 dm = (8 × 10) = 80 cm = 0.8 m [since 1 dm = 10 cm and 1 m = 100 cm]

    ∴ Area of the rectangle = Length × Breadth

    = 12.5 m × 0.8 m

    = 10 m2

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