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Mathematics, 26.03.2021 03:00 isabelsmhl

The surface area of a cone is SA = r2 + r(SL) , where r is the radius of the base and SL is the slant height of the cone. If the slant height of a cone is 20 feet, find the radius of the cone when the surface area is 684 square feet. URGENT

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The surface area of a cone is SA = r2 + r(SL) , where r is the radius of the base and SL is the slan...

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