The length of the minute hand of a clock is 14 ems. Find the area covered by it in 5 minutes. [Answer Limit: 50 words, Marks: 05] [UKPSC-2016]
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The area covered by minutes hand is 5 minutes. The length of minute hand is 14 cm is considered as radius. Angle swept jn 5 min is 30 deg.
Area of sector=∅/360*πr^2
Area=30/360*π*14*2=1/12*π×196/12=51.57cm