If an iron ball 8 inches in diameter weighs 80 pounds, how many pounds does an iron ball 12 inches in diameter weigh?


  1. Based on the fact that the iron ball of 80 pounds has 8 inches in diameter., the iron ball with 12 inches would weigh 120 pounds

    What is the weight of the iron ball?

    The weight of the iron ball can be found by the formula:
    = (Diameter of target iron ball x Weight of referrent iron ball) / Diameter of referent iron ball
    Solving gives:
    = (12 x 80) / 8
    = 960 / 8
    = 120 pounds
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