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A clock is started at 11 a.m. By 600 seconds past 6 p.m, the hour hand has turned through ?
Explanation :
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The total angle traced by the hour hand is the angle traced in 7 hours and 10 minutes.
We know that the angle traced by the hour hand in one hour is 30º and in one minute is 1/2º.
Therefore, (30º x 7) + (10 x 1/2º) = 215º is the angle traced by the hour hand.
