3.6 A rock is thrown into a still pond. The circular ripples move outward from the point of impact of the rock so that the radius of the circle formed by a ripple increases at the rate of 4 feet per second. Find the rate at which the area is changing at the instant the radius is 16 feet. When the radius is 16 feet, the area is changing at approximately (Round to the nearest thousandth as needed.) square feet per second.

A rock a trown into astil pond. The circular npples move outward from the point of impact of the rock so that the radius of the circle formed by a ripple increases at the rate of 4 se Find the rite at which the aves is changiog at the instant the radus is 16 feol. When the radis is 16 loet the anes is chenging at appeoximasely square teet per eecond (Round to the nearest thousander as neoded)