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6 April, 09:27

Part c when sizes of pizzas are quoted in inches, the number quoted is the diameter of the pizza. a restaurant advertises an 8-inch "personal pizza." if this 8-inch pizza is the right size for one person, how many people can be fed by a large 16-inch pizza? express your answer numerically. view available hint (s)

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  1. 6 April, 10:21
    0
    Uh, i think this one is "two people", even though a 16 inch pizza is, in my opinion, more than enough. sorry if incorrect.
  2. 6 April, 11:07
    0
    The number of people it feeds depends on the area of the pizza.

    We must find the area of an 8-inch pizza and the area of a 16-inch pizza.

    A = pi*r^2

    8-inch pizza:

    diameter = 8 inchesradius = 4 inches

    A = pi * (4 in) ^2 = 16pi in^2

    16-inch pizza:

    diameter = 16 inchesradius = 8 inches

    A = pi * (8 in) ^2 = 64pi in^2

    An 8-inch pizza has an area of 16pi in^2.

    A 16-inch pizza has an area of 64pi in^2.

    How many times greater is the area of the 16-inch pizza than the area of the 8-inch pizza?

    ratio = (64pi in^2) / (16pi in^2) = 64/16 = 4

    A 16-inch pizza has 4 times the area of an 8-inch pizza.

    Since an 8-inch pizza feeds one person, a 16-inch pizza feeds 4 people.
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