This is not a test or a quiz. Please help me with these questions. Thanks in advance

10. The radius, r, of a circle is increasing at a rate of 5 centimeters per minute. Find the rate of change of area, A, when the radius is 6. (Show how you set up and arrive at the answer) 1 1. A ladder 20 feet long is leaning against the wall of a house (see figure). The base of the ladder is pulled away from the wall at a rate of 2 feet per second. How fast is the top of the ladder moving down the wall when its base is 13 feet from the wall? Round your answer to two decimal places. (Show how you set up and arrive at the answer) 20 A