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A cylindrical pillar is 50 cm …

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A cylindrical pillar is 50 cm in diameter and 3.5 metre in height find the cost of painting the curved surface of the pillar at the rate of rupees 12.50 per meter2?

    • Posted by Lav Yadav 5 years, 3 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Gaurav Seth 5 years, 3 months ago

    Radius = 0.25m
    Height = 3.5m
    Radius = 1m
    CSA = 2pie r h
    = 2×22/7×0.25×3.5
    = 5.5m^2

    Cost of painting one m^2 = 12.50
    Cost of painting 5.5m^2 = 12.50 × 5.5
    = 68.75 rs.

    1Thank You

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