Question

7 out of 20 students got full marks on their test what angle would you use for this on a pie chart

Answer 1

7/20 times 360  (360 is the full degrees in a pie chart)

there are 18 20's in 360.  

7 times 18 is 126

or

2520/20  = 126

So, you'd use a 126 degree angle.