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16 August, 06:40

Jose is wrapping a stack of 100 coins in a paper holder. Each coin is 1/8inch thick and has a diameter of 1 inch. How many square inches of paper will Jose need to cover the stack of coins? Use 3.14 for pi

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  1. 16 August, 08:30
    0
    The resulting figure of a stack of 100 coins will be a right circular cylinder. We assume that Jose wraps around the cylinder (so it means not including the bases). Therefore we are solving for the lateral surface area of the cylinder: LSA = 2πrh.

    To solve for height h, we multiply the thickness of the coin 100 times.

    h = 100 * 1/8 in = 12.5 inches

    Solving for radius r:

    r = 1 inch/2 = 0.5 inches

    LSA = 2 (3.14) (0.5 in) (12.5 in) = 39.25 square inches

    Jose will need 39.25 square inches of paper to wrap the stack of coins.
  2. 16 August, 09:28
    0
    Which is a statistical question. How tall is the governor of our state
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