Ur not dumb!!! i graphed the line for u here. i suggest watching some khan academy videos for extra practice!
Circumference = 2 pi r
2 pi r = 200
r = 100 / pi
Area of base = pi r r
Area of base = 100*100 / pi
Area of base = 3183.1 sq. m.
A' = (-2, 1)
B' = (1, 0)
C' = (-1, 0)
Answers:
c=0.25p
p=4c
c=.25p
c=1/4p
Hope I' not too late -w-'