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4. Applications of Derivatives
4. Applications of Derivatives / Implicit Differentiation / Problem 3
Problem 3

The total surface area of a cylinder having radius rr and height hh is given as A=2πr(r+h)A=2\pi r\left(r+h\right). Calculate the value of drdh\frac{dr}{dh} if A=500πA=500\pi, r=5r=5 and h=12h=12.

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