The hour hand and the minute hand of a circular clock are 10 cm and 15 cm long . How far do the tips of two hands take it together move in 1 day?
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In one hour or 60 minutes the minute hand makes one revolution which in distance is equal to the circumference which is equal to 2π*radius=2π*7=14π. However, in 20 minutes you only went 20/60 or 1/3 of a revolution in which the tip of the minute hand travelled 1/3 of the circumference=14π/3≈14.66 inches.
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