Question

The numberof students in a hostel, speaking different languages is given below.Display the data in a pie chart.

$\begin{array}{ccccccc}\text{Language}& \text{Hindi}& \text{English}& \text{Marathi}& \text{Tamil}& \text{Bengali}& \text{Total}\\ \text{Number of students}& 40& 12& 9& 7& 4& 72\end{array}$

Answer 1

The central angle for each subject can be calculated as follows.

$\begin{array}{cccc}\text{Language}& \text{Number of students}& \text{Fraction}& \text{Central angle}\\ \text{Hindi}& 40& \frac{40}{72}& \frac{40}{72}\times {360}^{\circ }={200}^{\circ }\\ \text{English}& 12& \frac{12}{72}& \frac{40}{72}\times {360}^{\circ }={60}^{\circ }\\ \text{Marathi}& 9& \frac{9}{72}& \frac{40}{72}\times {360}^{\circ }={45}^{\circ }\\ \text{Tamil}& 7& \frac{7}{72}& \frac{7}{72}\times {360}^{\circ }={35}^{\circ }\\ \text{Bengali}& 4& \frac{4}{72}& \frac{4}{72}\times {360}^{\circ }={20}^{\circ }\end{array}$

A piechart of the above data is as follows.