I really think the answer is C
Answer:

Step-by-step explanation:
Rule: 

(y2-y1)/(x2-x1)=
slope: 21/26
Answer:
314.2ft^2
Step-by-step explanation:
Given data
Diameter= 20ft
Radius r= 20/2= 10ft
The expression for the area is
A= πr^2
A= 3.142*10^2
A= 3.142*100
A= 314.2ft^2
Hence the area is 314.2ft^2
It looks like a 126%angle ok