Answer:
254.5
Step-by-step explanation:
B. 63
Answer: R= 4.91
Pi r^2= 8^2
Pi r^2= 8.7^2
Pi r^2= 75.69
r^2=24.09
R= 4.91
Slope = - 1
y-intercept = 2
the value will be equal to 0
see the attached picture for solution --