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The Lengths of the Edges of a Cube Are Increasing

Question 58

Multiple Choice

The lengths of the edges of a cube are increasing at a rate of 9 ft/min. At what rate is the surface area changing when the edges are 16 ft long?

A) 972 ft²/min
B) 1,728 ft²/min
C) 3,072 ft²/min
D) 486 ft²/min
E) 7,776 ft²/min

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