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How many iron rods each of …

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How many iron rods each of length 7m and diameter 2cm can be made out of .88 cubic meter of iron?

    • Posted by Shubham Pandey 8 years, 3 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Rajeev Malhotra 8 years, 3 months ago

    Length of iron rod = 7m and diameter= 2/100 m. So radius  r= 2/100x2 =1/100m

    Volume of rod = π r2 h = 22/7 x(1/100)2 x 7

    V= 22/10000 m3

    Number of rods = Total volume / volume of one rod

    Number of rods= 0.88/22/10000

    Number of rods = 400

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