Question 8 The area of a healing wound is given by A = mr. The radius is decreasing at the rate of 4 millimeter per day at the moment when r - 38. How fast is the area decreasing at that moment? Select an answer Question Help: Video Calculator t noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B s sailing north at 24 knots. How fast (in knots) is the distance between the ships changing at 7 PM? Note: 1 knot is a speed of 1 nautical mile per hour.) knots Question Help: D Video Calculator