A rectangle has a length of 1 inches and a width of 12 inches whose sides are changing. The length is increasing by 7 in/sec and the width is growing at 8 in/sec. What is the rate of change of the area?

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Q: What is the rate of change of the area?

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A: dhdt=7 in/sec , dbdt = -10 in/sec

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A: Solution:-

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