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Math Help - another word problem...am on the right trak

  1. #1
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    another word problem...am on the right trak

    I think i got this one, but am not sure...can you tell me if i am correct???

    Bobby bought a pizza and cut it into 12 equal slices (sectors of a circle). He measured the perimeter of a single slice and found it to be 28 inches. What size pizza did he order, that is what is the diameter of the pizza? Nearest tenth of an inch.

    2 times the radius plus the arc length is equal to 28 inches

    2r + a = 28

    the arc length is simply 1/12 * Pie *2r

    2r + 1/6 * Pie * r = 28

    r = 28/(2 + 1/6pie)

    r = 11.1 in

    d =22.2 inches


    is this right??????????????????????????????????//
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  2. #2
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    Hello, igottaquestion!

    Absolutely right!

    Good job!

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