The minute hand of a watch is 1.5cm long. How far does its tip movein 40 minutes?​

Question

The minute hand of a watch is 1.5cm long. How far does its tip movein 40 minutes?​

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Savannah 5 days 2021-09-10T19:44:00+00:00 2 Answers 0 views 0

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    0
    2021-09-10T19:45:29+00:00

    The length of the minute hand is 6.28 cm.

    Step-by-step explanation:

    Given : The minute hand of a watch is 1.5 cm long.

    To find : How far does its tip move in 40 minutes?

    Solution :

    The minute hand of a watch is 1.5 cm long.

    i.r. r= 1.5 cm

    We know that,

    Where, r is the radius

    l is the length of arc

    is the angle subtended.

    Now,

    Minute hand make 1 revolution in 1 hour.

    i.e. Minute hand complete 360° in 1 hour.

    So degree complete in 1 minute =

    Degree complete in 40 minute =

    Degree complete in 40 minute = 240°

    In radian measure,

    Substitute the value in the formula,

    Therefore, The length of the minute hand is 6.28 cm.

    0
    2021-09-10T19:45:48+00:00

    Answer:

    that’s your answer. Answer: The length of the minute hand is 6.28 cm

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