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OpenStudy (anonymous):
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OpenStudy (anonymous):
OpenStudy (dumbcow):
ok we are to assume the balloon is a sphere SA = 4*pi*r^2 use circumference to solve for r 2*pi*r = 28 r = 14/pi SA = 4*pi*(14^2/pi^2) you can take it from here
OpenStudy (anonymous):
2463in.^2?
OpenStudy (dumbcow):
you're off quite a bit did you remember to divide 14^2 = 196
OpenStudy (anonymous):
oh, okay
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