math

two spherical cantaloupes of the same kind are sold at a fruit and vegetable stand. The circumference of one is 60cm and that of the other is 50cm. The larger melon is 1 1/2 times as expensive as the smaller. Which melon is the better buy and why?

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  1. C = pi * d
    60 = 3.14d
    60/3.14 = d
    19.1 = d

    V = 4/3 * pi * r^3
    V = 4/3 * 3.14 * 9.55^3
    V = 4/3 * 3.14 * 871
    V = 3646.6 sq. cm

    Do the same for the smaller melon.

  2. C=pi*d
    50=3.14d
    50/3.14=d
    15.9=d

    Still trying to get the V problems

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