Answer: x=4, I added a photo of my work in case you need it I hope it helps
I don't fully understand the question but I hope this helps...
I believe this would mean he made $1405 that day.
Answer:

Step-by-step explanation:
We are given that
Length of rope=l=160 feet
Radius of quadrant of circle=r=160 feet
We have to find the maximum grazing area of the cow.
We know that
Area of quadrant of circle=
Where 
Using the formula
Area grazed by cow=
Area grazed by cow=