The minute hand of a circular clock is $$15\ cm$$ long. How far does the tip of the minute hand move in $$1$$ hour? (Take $$\pi =3.14$$)
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Solution
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In $$1$$ hour, minute hand completes one round means makes a circle. Radius of the circle$$(r)=15$$cm Circumference of circular clock$$=2\pi r$$ $$=2\times 3.14\times 15=94.2$$cm Therefore, the tip of the minute hand moves $$94.2$$cm in $$1$$ hour.
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