How do you find the central angle of a pie chart for a section of the pie chart that represents 20% of the pie?
In any sector, there are
the arc length,
the sector area
the sector angle
They all represent the SAME fraction of the whole circle.
The arc length is a fraction of the circumference
The sector area is a fraction of the whole area
The sector angle is a fraction of
If the sector is
The sector angle is therefore: