In a class of 150 students, the sector in a pie chart representing the students offering Physics has angle 12°. How many students are offering Physics?
The correct answer is D. 5
In a pie chart, the angle corresponding to a sector is proportional to the fraction of the total that it represents. If the angle for the Physics sector is \(12^\circ\), this corresponds to the fraction \(\frac{12}{360}\) of the total circle (since there are \(360^\circ\) in a circle).
Now, set up a proportion to find the number of students offering Physics:
\(\frac{\text{Number of Physics students}}{\text{Total number of students}} = \frac{12}{360}\).
\(\frac{\text{Number of Physics students}}{150} = \frac{12}{360}\).
Solve for the number of Physics students:
\(\text{Number of Physics students} = \frac{12}{360} \cdot 150\).
Number of Physics students= 5.
Therefore, there are 5 students offering Physics.
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