Surface Area of a Cone
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http://www.lerc.nasa.gov/Other_Groups/K12/p_test/math_9/math_p_q39.html  


NASA Lewis Learning Technologies Project  
What is the approximate surface area of a cone whose slant height is 6 inches and whose radius is 3 inches? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.  


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