You know 10 students are 100%
so that we have : 7 students are 7/10 x 100 = 70
the angel you would use in a pie chat is : 70 x 3.6 = 252
Answer:
I am so sorry. I could only help for (a), model! The questions are not specific enough! SORRY!!!!
I'm not sure but it might be 14. I don't know what this is: ^