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The floor of a rectsngular hall …

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The floor of a rectsngular hall has a perimeter 250 m if the cost painting the four walls at the rate of RS 10 per m2 is 15000 find the height of hall

    • Posted by Raj Singh 6 years ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Yogita Ingle 6 years ago

    Perimeter of rectangular hall = 2(l + b) = 250 m
    Total cost of painting = Rs.15000
    Rate per m2 = Rs.10
    Area of four walls = 2(l + b) h m2 = (250×h) m2
    A/q,
    (250×h)×10 = Rs.15000
    ⇒ 2500×h = Rs.15000
    ⇒ h = 15000/2500 m
    ⇒ h = 6 m
    Thus the height of the hall is 6 m.

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