Answer:

Step-by-step explanation:
Step 1
Find the radius of the circular cross section
we know that
The circumference is equal to

we have

substitute and solve for r

simplify


Step 2
Find the area of the circular cross section
The area of the circle is equal to

we have

substitute


Answer:
y=2/1x+5
y=-3/1+3.2
I hope this is what you were asking
Well nine times 199 is 1,791but im not sure if thats what its asking