3. Draw a pie chart showing the following information. The table shows the colours preferred by a group of people.


Find the proportion of each sector. For example, Blue is \(\frac { 18 }{ 36 } =\frac { 1 }{ 2 }\) ; Green is \(\frac { 9 }{ 36 } =\frac { 1 }{ 4 }\) and so on.

Use this to find the corresponding angles.

Central angles with their color are:
Blue colour: \(=\left( \frac { 18 }{ 36 } \times 360 \right) ^{ \circ }=180^{ \circ }\)

Green colour: \(=\left( \frac { 9 }{ 36 } \times 360 \right) ^{ \circ }=90^{ \circ }\)

Red colour: \(=\left( \frac { 6 }{ 36 } \times 360 \right) ^{ \circ }=60^{ \circ }\)

Yellow colour: \(=\left( \frac { 3 }{ 36 } \times 360 \right) ^{ \circ }=30^{ \circ }\)

Now, various components is shown by the adjoining pie chart.