A circle graph divides a quantity into sectors. If the *Office Copiers* sector occupies $25\%$ of total production, what is the **central angle** of that sector (in degrees, to the nearest whole degree)?

Central angle $=$ percent $\times 360^{\circ}$. So $0.25 \times 360^{\circ} = 90^{\circ}$. - Trap A confuses percent with degrees. - Trap D is for a $50\%$ sector. Quick sanity: $25\%$ is one-quarter of the circle, and $90^{\circ}$ is one-quarter of $360^{\circ}$ ✓.