the length of minute hand of a circular watch is 20 cm how much distance does the tip of minute hand cover in 1 hour ?(π=3.14)
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distance does the tip of minute hand cover in 1 hour is 125. 6 cm
length of minute hand of circular watch, l = 20cm.
we know, minute hand completes one revolution in one hour.
so, distance travelled by minute hand in one hour = circumference of circular watch of radius 20cm
= 2πl
= 2 × 3.14 × (20cm)
= 125.6 cm
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