The base of the rectangle is changing at the rate of 3in/min. if its height remains constant, determine the rate of change of its perimeter with respect to time?
dadt=3in/minb=ConstP=2a+2bdPdt=2dadt=6in/min\frac{da}{dt}=3in/\min \\b=Const\\P=2a+2b\\\frac{dP}{dt}=2\frac{da}{dt}=6in/\mindtda=3in/minb=ConstP=2a+2bdtdP=2dtda=6in/min
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