The hour-hand of a clock is 6 cm long. The angle swept by it between 7:20 a.m. and 7:55 a.m. is:
(a) $\left(\frac{35}{4}\right)°$
(b) $\left(\frac{35}{2}\right)°$
(c) $35°$
(d) $70°$

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Accepted Answer

Step 1: Time = 35 minutes. Hour hand moves $\frac{360°}{12 	imes 60} = 0.5°$ per minute. Angle $= 35 	imes 0.5 = \frac{35}{2}°$

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Solution