If a sector in a pie chart has central angle $90^\circ$, the fraction of the whole that it represents is:

If a sector in a pie chart has central angle $90^\circ$, the fraction of the whole that it represents is:
  1. $\dfrac{1}{2}$
  2. $\dfrac{1}{4}$
  3. $\dfrac{1}{6}$
  4. $\dfrac{1}{8}$

Solution

Fraction $= 90/360 = 1/4$.

Asked in: IMO

Practice more INTRODUCTION TO GRAPHS questions on Aicharya