SOLUTION: A conical shaped container is made from a circular piece of paper. It has a base radius of 9cm and a height of 12cm. What is the circumference of the original circle in centimatres

Algebra ->  Quadratic-relations-and-conic-sections -> SOLUTION: A conical shaped container is made from a circular piece of paper. It has a base radius of 9cm and a height of 12cm. What is the circumference of the original circle in centimatres      Log On


   

Question 141473: A conical shaped container is made from a circular piece of paper. It has a base radius of 9cm and a height of 12cm. What is the circumference of the original circle in centimatres?
Answer by solver91311(24713) About Me  (Show Source):
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The radius of the original piece of paper is the slant height of the cone. The slant height of the cone can be calculated by the Pythagorean Theorem because the slant height is the hypotenuse of a right triangle where the radius of the cone base and the height of the cone are the legs. Once you have calculated the radius of the original piece of paper, you can multiply by 2pi to get the circumference. I would leave my answer in terms of pi unless your instructor has given you different instructions.