A piece of wire in the form of a rectangle 18 cm long and 15 cm wide is bent and reshaped as a circle. Find the radius of a circle.

Question

A piece of wire in the form of a rectangle 18 cm long and 15 cm wide is bent and reshaped as a circle. Find the radius of a circle.

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MichaelMet 6 months 2021-07-19T09:13:59+00:00 1 Answers 6 views 0

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  1. thienthanh
    0
    2021-07-19T09:15:21+00:00
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    Answer:

    r = 12.89

    Step-by-step explanation:

    18(2) + 15(3) = 81 = C

    C = 2πr

    81 = 2πr

    81/2 = πr

    r = 81/2π ≈ 12.89

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