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Related rates (multiple rates)

One leg of a right triangle is decreasing at a rate of 55 kilometers per hour and the other leg of the triangle is increasing at a rate of 1414 kilometers per hour.
At a certain instant, the decreasing leg is 33 kilometers and the increasing leg is 99 kilometers.
What is the rate of change of the area of the right triangle at that instant (in square kilometers per hour)?
Choose 1 answer:
Choose 1 answer: