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OpenStudy (anonymous):

No one has helped me with this can you help me find the surface area of this cone please!

OpenStudy (anonymous):

OpenStudy (anonymous):

please please help me

OpenStudy (anonymous):

The area of the cone is πrs and the base is πr² where r = radius and s = slant height. Therefore, the formula for the surface area of a cone is: πrs + πr². Plug and chug! SA = πrs + πr² SA = π(3)(27) + π(3)² SA = 81π + 9π SA = 90π cm²

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