Answer:3 units/s
Step-by-step explanation:
Given

Point P lie on this curve so any general point on curve can be written as 
and 
Distance between Point P and (2,0)

P at x=3 P=2
rate at which distance is changing is



The square root of 10 because
sqrt(10) ^2 * 3.14 =
10*3.14 = 31.4
72cm
you multiply the outside length (6cm each) by how many there are