You can
put this solution on YOUR website! I need to know how to calculate the surface area of a circular cone that has a radius of 3 and height of 7.
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surface area = pi*r^2 + prL where L is the slant height of the cone.
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L = sqrt(3^2+7^2) = sqrt(58) = 7.62
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SA = (3.14)*3^2 + (3.14)*3*7.62 = 100 sq. units
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Cheers,
Stan H.
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