Question Detail
Question
The rate of change of area \( A \) with respect to \( x \) if \( A = \pi x^2 - 20x \) is?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Differentiate with respect to ( x ): ( dA/dx = 2\pi x - 20 ).
Hint
Differentiate each term with respect to \( x \).