Question

12 out of 30 people chose blue as their favourite colour, calculate the angle you would use for blue on a pie chart

Answer 1

One way:

`(12)/(30) x 360` (360 degrees in a circle which is what a pie chart is)
or
`(2)/(5)` x 360
which is
`(2)/(5)x (360)/(1)` = 144⁰ angle

Answer 2

The angle you would use for blue on a pie chart is 144°.

Explanation:

Consider the provided information.

The full chart would have 360 Degrees. That means 30 people equals to 360°

`30\ people=360`

Divide both sides by 30.

`1\ people=12`

Now multiply both sides by 12.

`1* 12\ people=12* 12`

`12\ people=144`

Hence, the angle you would use for blue on a pie chart is 144°.