SOLUTION: Hi! **P=pi (3.14)
A=2Pr^2 + 2Prh
Solve for r>0.
Thank you soooo much in advance. This was in a Calc BC summer packet. Due Tuesday!
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Question 987650: Hi! **P=pi (3.14)
A=2Pr^2 + 2Prh
Solve for r>0.
Thank you soooo much in advance. This was in a Calc BC summer packet. Due Tuesday!
Found 2 solutions by josgarithmetic, jim_thompson5910:
Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!
Formula for general solution of a quadratic equation.
-------simplify if you can.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The last equation is in the form where , and
Use the quadratic formula to solve for r
Since , this means we only focus on the "plus" portion of the "plus/minus". So we end up with
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