the minute hand of a circular clock is 15 cm long. how far does the tip of the minute hand move in 1 hour?
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Answer:
as minute hand move 360° inn1 hour which form a circle
length cover /arc drawn by tip hand
2×π×15=94.28cm
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In 1 hour, minute hand completes 1 rotation = circumference of the clock
Radius of the circle (r) = 15cm
Circumference of the clock=2πr
= 2 × 3.14 × 15
= 94.2 cms
The tip of the minute hand moves 94.2 cms in 1 hour.
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