Math Problem Statement
A rectangle has a length that is decreasing at a rate of 11 mm per second with the width being held constant. What is the rate of change of the area of the rectangle if the width is 9 mm?
Solution
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Math Problem Analysis
Mathematical Concepts
Calculus
Derivatives
Formulas
Area of a rectangle: A = length × width
Rate of change of area: dA/dt = (dl/dt) × w
Theorems
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Suitable Grade Level
High School
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