Answer:
the mean is 83.6
Step-by-step explanation:
The radius of circle is r = 6 cm.
The formula for the circumference of circle is,

For exact circumference take pi = 3.14.
Substitute 6 for r in the formula to determine the circumference of circle.

So exact circumference of circle is 37.68 or 12 pi .
Y=kx^2 (k being a constant)
72=k (3^2)
k=8
y=8x^2
Answer:
I believe it is D at least I hope so