Find the slant height of a cone

isabel23

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Apr 21, 2020
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Hello! First of all, thank you for taking the time to help me! Second of all, I need help with this problem. I have to find the slant height of this cone but I only have the surface area and the diameter.
 

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You can find the appropriate formulas here:


But you will have to decide whether the problem is referring to the lateral surface area or the total surface area. That may be indicated in the context, or you may have to ask.
 
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