In an examination, 40% of candidates got second class. When the data are represented by a pie chart, what is the angle corresponding to second class?

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NDA (Held On: 23 April 2017) Maths Previous Year paper
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  1. 40°
  2. 90°
  3. 144°
  4. 320°

Answer (Detailed Solution Below)

Option 3 : 144°
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Detailed Solution

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Calculation:

Let the circle be the total number of students.

Therefore 100% = 360°

⇒ 1% = \(\frac{{360^\circ }}{{100}}\)

\(\therefore \;40\% \; = \frac{{360^\circ }}{{100}} \times 40 = 144^\circ\)

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