alleryIn strict maths, a circle is only the boundary of which region?
ALens
BDisc
CSector
DSegment
Answer & Solution
Correct answer: B. Disc
1. The region inside a circle is called a disc.
2. In strict usage the circle is just the boundary curve of that disc.
3. A lens, sector or segment are other regions.
_Source: Wikipedia, Circle, Terminology_
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