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Natali5045456 [20]
3 years ago
11

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

Mathematics
1 answer:
GrogVix [38]3 years ago
6 0

Answer:

The angle = 144 degrees.

Step-by-step explanation:

Look at it this way (it is a proportion question)

30 people would require a pie chart made of a full circle (360 degrees)

12 people would require x part of the pie chart.


30/360 = 12 / x            Cross multiply

30x = 360 * 12             Simplify the right

30x = 4320                  Divide by 30

30x/30 = 4320/20      

x = 144                           Answer

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