Solve the problem. Water is falling on a surface, wetting a circular area that is expanding at a rate ofgmmZ/s_ How fast is the radius of the wetted area expanding when the radius is 126mm? (Round your answer to four decimal places.) \fProvide an appropriate response. If yax+ 1 = 12 and dx/dt = 8, then what is dy/dt when x = 15 and y = 3? A B D