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OpenStudy (anonymous):
Help! Pic below Find the radius of the right cylinder the height of the cylinder is equal to its diameter
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OpenStudy (anonymous):
|dw:1365306974366:dw|
OpenStudy (anonymous):
confirm this: the S = surface area, right? is this the total surface area or just the curved surface area?
OpenStudy (anonymous):
yes S=surface area
OpenStudy (anonymous):
incomplete answer.
OpenStudy (anonymous):
sorry sorry i believe the total surface area
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OpenStudy (anonymous):
ok, then the formula would be: \[S=2\times\pi r^2+2\pi rh\]
OpenStudy (anonymous):
plug in "h=2r" and the value for "s" and solve for "r"
OpenStudy (anonymous):
so it would be 150=2*pir^2+2pir 2x
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