The following table shows the number of medals won in the 2008 olympics for swimming by the top five countries.

country number of medals
usa 31
australia 20
great britain 6
china 6
france 6

how many degrees will the usa section be in a circle graph?

So what you need to do is get the total number of medals find the % medals of USA over total medals use the % to find the degrees by multiply the % to 360. And you can do it like this: 31+20+6+6+6 = 69 31/69 = 44.9% 44.9% * 360 = 161.7 degree. I hope this can help you greatly