Please Help ASAP Precalculus Question!!!
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If the question was (for the same balloon):
Calculate the surface area when r = 5 in.
Steven G
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Obviously you do not know what it means for S to be expressed as a function of t. It means that S equals something that contains only the variables t (and if S is a constant then it does not even have to have a t in it).
S = 4*pi*r^2 = 4*pi*((2/3)t^3)^2 = (16/9)pi*t^6
S = 4*pi*r^2 = 4*pi*((2/3)t^3)^2 = (16/9)pi*t^6