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OpenStudy (anonymous):
A conical paper cup is to have a height of 4 inches. Find the radius r of the cone that will result in a surface area of 6x3.14 inches squared
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OpenStudy (jtvatsim):
do you have the formula for the surface area of a cone?
OpenStudy (anonymous):
I think so, I think it's 3.14 times the square root of the (radius squared plus the height squared)
OpenStudy (jtvatsim):
looking it up, it looks like it should be pi times the radius times the square root of ...
OpenStudy (anonymous):
Oh yeah, that's it. I got 1.417, and it's not the right answer.
OpenStudy (anonymous):
So do you have the right answer?
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