Suppose That You Want to Construct a Pie Chart to Represent

Essay

Suppose that you want to construct a pie chart to represent the following data.
$\begin{array} { c c } \text { Blood Type } & \text { Frequency } \\\hline \text { O } & 90 \\\text { A } & 84 \\\text { B } & 18 \\\text { AB } & 8\end{array}$
Explain how you would calculate the angle for the sector corresponding to the blood type
O.