1. The problem statement, all variables and given/known data The length of a rectangle is increasing at a rate of 8cm/s and its width is increasing at a rate of 3cm/s when the length is 20 cm and the width is 10cm, how fast is the area of the rectangle increasing? 2. Relevant equations V=LW 3. The attempt at a solution dL/dt=8 dW/dt=3 l=20 w= 10 dA/dt=? (V=LW)' dA/dt= dL/dt * dW/dt before I go any further is this correct both the L and the W become one when derived right?