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Question: Answered & Verified by Expert
In a test in Mathematics, $20 \%$ of the students obtained "first class". If the data are represented by a Pie-Chart, what is the central angle corresponding to "first class"
MathematicsStatisticsNDANDA 2018 (Phase 1)
Options:
  • A $20^{\circ}$
  • B $72^{\circ}$
  • C 36
  • D 144
Solution:
2703 Upvotes Verified Answer
The correct answer is: 36
Central angle $=20 \%$ of $360^{\circ}$
$=\frac{20 \times 60}{100}$
$=72^{\circ}$

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