In a school survey, students showed these preferences for instructional materials. Answer the question.
-How many degrees are in the central angle for the "radio" sector?
A)5°
B)9°
C)18°
D)180°

Question

In a school survey, students showed these preferences for instructional materials. Answer the question. 
-How many degrees are in the central angle for the "radio" sector?
A)5° 
B)9° 
C)18° 
D)180°

Quizplus · Accepted Answer

A central angle in a circle is the angle formed by two radii that divide the circle into two arcs. The degree measure of a central angle is equal to the degree measure of its intercepted arc. The "radio" sector refers to a sector of a circle used in various contexts, but without specific context, it's impossible to determine its exact degree measure. However, given the options, if this is a question from a specific context implying a calculation or a standard value, 18° is a plausible measure for a specific sector in some contexts, such as dividing a circle into 20 equal parts (360°/20 = 18° per part). The other options are either too small for typical "radio" sector interpretations or, in the case of 180°, represent a semicircle, which is unlikely to be referred to as a "radio" sector without further context.

In a School Survey, Students Showed These Preferences for Instructional