### Home > CALC > Chapter 7 > Lesson 7.1.4 > Problem 7-40

7-40.

*A* = π*r*^{2}

Implicitly differentiate both sides of the area function WITH RESPECT TO TIME, *t*.

7-40.

*A* = π*r*^{2}

Implicitly differentiate both sides of the area function WITH RESPECT TO TIME, *t*.