dr dA Let A be the area of a circle with radius r. If = 2, find when r = 3. dt dtA spherical snowball is melting in such a way that its radius is decreasing at a rate of 0.1 cm/ min. At what rate is the volume of the snowball decreasing when the radius is 13 cm. (Note the answer is a positive number). \"m3 min 4 3 Hint: The volume of a sphere of radius r is V = 511'? The altitude of a triangle is increasing at a rate of 3 centimeters! minute while the area of the triangle is increasing at a rate of 3.5 square centimeters! minute. At what rate is the base of the triangle changing when the altitude is 10 centimeters and the area is 82 square centimeters? A rotating light is located 20 feet from a wall. The light completes one rotation every 3 seconds. Find the rate at which the light projected onto the wall is moving along the wall when the light's angle is 20 degrees from perpendicular to the wall. wall light q Answer is a positive value. At noon, shipAis 50 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per hour.) A street light is at the top of a 19 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft! sec along a straight path. How fast is the tip of her shadow moving when she is 45 ft from the base of the pole? SEC