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A sector with an angle of 90 degrees covers what fraction of the circle?

AOne fourth
BOne third
COne half
DOne fifth
Answer & Solution
Correct answer: A. One fourth
1. Divide the angle by three hundred sixty. 2. Ninety over three hundred sixty is one quarter. 3. So it is one fourth. _Source: syllabus Mathematics Class X, Chapter 12, Areas Related to Circles._
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