Pie chart is used to show data like a pie
Suppose we have a pie chart like this
Mobile phones in yours school.
Suppose total mobile phones are 1000
How many phones are of Apple?
Number of Apple phones = 25% × 1000
= 25/100 × 1000
= 25 × 10
So, there are 250 phones of Apple
But , how to draw a pie chart ?
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