Question 1123093
a.  radius=22-4t, t<5.5 sec.
b. A=pi*r^2
c. A=pi*(22-4t)^2,  t<5.5 sec
d. f(A)=pi*(22-4t)^2,  t<5.5 sec
e. A=pi*(22-8t)^2, t < 2.75 sec