Question

Find the central angle for the pie chart where:
Sleep - 7 hrs.
School - 8 hrs.
Homework - 6 hrs.
Others - 3 hrs.

• A. 90
• B. 45
• C. 105
  
• D. 120

Answer 1

There is 24 hours in a day. Hence
Sleep = $\frac{{360}^{\circ }}{24}\times 7$ = ${105}^{\circ }$

School = $\frac{{360}^{\circ }}{24}\times 8$ = ${120}^{\circ }$

Homework = $\frac{{360}^{\circ }}{24}\times 6$ = ${90}^{\circ }$

Others = $\frac{{360}^{\circ }}{24}\times 3$ = ${45}^{\circ }$