SOLUTION: These worded problems are killing me. Please assist me in making this a quadratic equation. Thank you. It states: Find the radius of a 12 cm high cylinder that has a surface are

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: These worded problems are killing me. Please assist me in making this a quadratic equation. Thank you. It states: Find the radius of a 12 cm high cylinder that has a surface are      Log On


   

Question 130911: These worded problems are killing me. Please assist me in making this a quadratic equation. Thank you.
It states:
Find the radius of a 12 cm high cylinder that has a surface area of 846cm^2.
Thank you so very much.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the radius of a 12 cm high cylinder that has a surface area of 846cm^2.
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Surface Area = 2(pi)rh
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846 = 2(pi)r*12
70.5 = 2(pi)r
r = 11.22 cm
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Cheers,
Stan H.