length is 5 inches? A rectangle is inscribed in a circle of radius 4 inches. If the length of the rectangle is decreasing at the rate of 3 inches per second, how fast is the area changing at the instant when the a) O. 14V/39 13 in2/sec b) O- -14V39 13 in-/sec c) O-15v39 in2/sec d) 05v39 in2 /sec e) O- 15V/39 8 in2/sec A spherical snowball is melting in such a manner that its radius is changing at a constant rate, decreasing from 23 cm to 14 cm in 30 minutes. At what rate, in cm per minute, is the volume of the snowball changing at the instant the radius is 4 cm? 467 a) O 5 b) O 14An c) O- 192n 5 d) O- 5 48 n e) O 5