Answer:
x^2 / 4pi
Step-by-step explanation:
The area of a circle is (pi x r)^2
The circumference of a circle is 2pi x r
The find the radius, you need to divide x by 2pi, so x / 2pi
Then just plug it in as the radius:
(pi x (x / 2pi))^2 = x^2 / 4pi
The bill total would be $140 because there are seven people (6 friends+Jacob) and each payed $20. (7)(20)
The answer is 16 degrees to your problem.
