SOLUTION: The lengths of the edges of a cube are increasing at a rate of 5 ft/min. At what rate is the surface area changing when the edges are 13 ft long?

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Question 792374: The lengths of the edges of a cube are increasing at a rate of 5 ft/min. At what rate is the surface area changing when the edges are 13 ft long?
Answer by Alan3354(69443) About Me  (Show Source):
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The lengths of the edges of a cube are increasing at a rate of 5 ft/min. At what rate is the surface area changing when the edges are 13 ft long?
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A = 6s^2
dA/dt = 12s*ds/dt
= 156 sf/min