A circle has a sector with area 20 pi and central angle of 2/5 pi radians.
What is the area of the circle?
Either enter an exact answer in terms of t or use 3.14 for it and enter your answer as a decimal.
20%

Just tell me how to set up the equation.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Someone answer asap for ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?