Show transcribed image text 12. Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 3 mi2 /hour. How fast is the radius of the spill increasing when the radius is 15 mil? 13. A 13 foot ladder is leaning against a wall. If the bottom of the ladder is being pulled along the ground away from the wall at a constant rate of 1 ft./s. How fast will the top of the ladder be moving down the wall when the top is 5 feet above the ground? Think of the corner of the wall and the floor as situated at the origin. Then use: x to denote the distance along the floor from the wall to the foot of the ladder y to denote the distance along the wa from the floor to the top of the ladd ·
12. Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 3 mi2 /hour. How fast is the radius of the spill increasing when the radius is 15 mil? 13. A 13 foot ladder is leaning against a wall. If the bottom of the ladder is being pulled along the ground away from the wall at a constant rate of 1 ft./s. How fast will the top of the ladder be moving down the wall when the top is 5 feet above the ground? Think of the corner of the wall and the floor as situated at the origin. Then use: x to denote the distance along the floor from the wall to the foot of the ladder y to denote the distance along the wa from the floor to the top of the ladd ·
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