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30 August, 19:44

A cylindrical barrel has a diameter of 18

inches. Which of the following is the best estimate

of the circumference of the barrel in feet?

A. 10 ft

B. 2 ft

C. 5 ft

D. 1 ft

+3
Answers (2)
  1. 30 August, 19:49
    0
    C. 5 ft

    Step-by-step explanation:

    The diameter is 18 inches. Lets change that to feet

    1 ft = 12 inches

    18 inches * 1 ft/12 inches = 1.5 ft

    The circumference is given by

    C = pi * d

    C = 3.14 * 1.5

    C = 4.71 ft
  2. 30 August, 20:11
    0
    C. 5 ft

    Step-by-step explanation:

    Radius = 18/2 = 9 in : 12 = 0.75 ft

    Circumference = 2 * 3.14 * 0.75

    = 4.71 ft

    From the options, 5 ft is the closest
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