In a pie chart, $\dfrac{1}{6}$ of the total is shown by category $X$. Sector angle for $X$ is:

In a pie chart, $\dfrac{1}{6}$ of the total is shown by category $X$. Sector angle for $X$ is:
  1. $30^{\circ}$
  2. $45^{\circ}$
  3. $60^{\circ}$
  4. $72^{\circ}$

Solution

Angle $= \dfrac{1}{6}\times 360^{\circ} = 60^{\circ}$.

Asked in: IMO

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