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8 December, 12:13

The minute hand of a clock is 7 inches long. How far does the tip of the minute hand move in 5 minutes? If necessary, round the answer to two decimal places.

A) 3.67 inches

B) 4.9 inches

C) 6.18 inches

D) 1.93 inches

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Answers (1)
  1. 8 December, 12:44
    0
    The movement of the minute hand is circular.

    Tangence speed is V=2Rπ/T = 2*7*3.14/3600 inches/sec=0.012211 inches/sec

    The path (distance) that minute hand past is D=V*t = 0.012211 * 5 min = 0.012211 * 300sec=>

    D=3.663≈3.66 inches

    Good luck!
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