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A company carried out a survey, recording how staff in a particular office spent their working time. The table shows the average number of minutes spent in each hour on various activities.
|Activity||Time taken on average in one hour/mins|
|Talking with colleagues||10|
The data is to be displayed as a pie chart. Work out the angle at the centre for each slice.
Since one hour will be represented by 360° on the pie chart, 1 minute will be represented by 360° ÷ 60 = 6°.
So the required angles on the chart are:
|Keyboarding||35 × 6° = 210°|
|Answering telephone||12 × 6° = 72°|
|Talking with colleagues||10 × 6° = 60°|
|Other activities||3 × 6° = 18°|
Check: 210° + 72° + 60° + 18° = 360°.