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Assume that the height of your cylinder is 8 inches. Consider A as a function of r, so we can write that as A(r)=2r2+16r. What

Assume that the height of your cylinder is 8 inches. Consider A as a function of r, so we can write that as A(r)=2πr2+16πr. What is the domain of A(r)? In other words, for which values of r is A(r) defined?

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