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The length of the minute hand of a clock is 14cm. Find the area covered by the minute hand on thecircular dial in an interval of 20 minutes.(Conn) |
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Answer» length= 14 cm Minutes = 20 (1 min = 6 degree) Angle = 20 * 6 = 120 degree Area = π * r^2 * (θ/360) = 3.14 * 14 * 14 * ( 120 /360 ) = Area = 205.14cm^2 |
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