Example: in a school, there are 750 students in Year 1,42 pie graph to represent the number of students Solutions: Total number of students = 750+420+630=1800 Year 1: size of angle x 360° = 150° Year 2: size of angle x 360° = 84° Year 3: size of angle = -x 360° = 126° Draw the circle following the measure in each secto chart. Don't forget to write the title "Groups of Stude​