A circular wall clock has a radius of 28 cm. Calculate the distance covered by the tip of the hour hand in 9 hours, assuming it is positioned at the edge of the clock face?
(Use π = 22/7)

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Accepted Answer

1. The hour hand makes one full turn in 12 hours. So in 9 hours it turns $9/12=3/4$ of a circle.
2. Circumference is $2\pi r$. With $r=28$ cm and $\pi=22/7$, full circumference = $2\pi r = 2(22/7)(28) = 176$ cm.
3. Distance in 9 hours = $(3/4)	imes176 = 132$ cm.
4. So the correct option is (a).
FINAL_ANSWER: <a>

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