Step-by-step explanation:
There are 70 people in a class. A student wants to plot these data in a circle.
We need to find the angle should the wedge for barbecue have.
There are 20 such students that like barbecue.
So,
![B=(20)/(70)* 360^(\circ)\\\\B=102.85^(\circ)](https://img.qammunity.org/2021/formulas/physics/high-school/oq2gi9jsnkird74kvbfc0jzw42hm3ti8xq.png)
or
B = 103°
It means that 103° on the circle shows the number of students that like barbecue .