# Surface area of cone

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23-Jul-2015Category

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Surface area of cone

Surface area of cone

Area of a circle having sector (circumference) 2 l = l 2Area of circle having circumference 1 = l 2/ 2 l So area of sector having sector 2 r = ( l 2/ 2 l )x 2 r = rlSurface area of cone

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