help me understand this, 3 papers

Due: Friday, November 20 at 11:59pm NDT. Use a scanner app and submit as one pdf le through brightspacecourse content-gradescope (please match questions and pages). SHOW ALL WORK . Each side of a square is increasing at a rate of 6 cm/s. At what rate (in cm2/s) is the area of the square increasing when the area of the square is 16 cm2? . The radius of a sphere is increasing at a rate of 4 mm/s. How fast is the volume increasing (in mm3/s) when the diameter is 80 mm? . A man starts walking north at 2 ft /s from a point P. Five minutes later a woman starts walking south at 7 ft/s from a point 500 ft due east of P. At what rate (in ft/s) are people moving apart 15 minutes after the woman starts walking