UPSC NDA I 2021 Mathematics Solved Paper

Concept:
In a pie chart, the central angle of each slice of the pie is proportional to its value as compared to the total value.
θ=‌

‌ Value of Slice. ‌

‌ Total Value. ‌

×360∘
Calculation:
Angle corresponding to the Sciencegraduates =θ=‌

‌ Number of Science graduates. ‌

‌ Total number of graduates. ‌

×360∘
‌‌=‌

30

30+70+50

×360∘
‌‌=‌

30

150

×360∘
‌‌=72∘.