alleryA circle is described as symmetrical about how many axes?
ASeven axes
BTwelve axes
CBoth axes
DNine axes
Answer & Solution
Correct answer: C. Both axes
1. Symmetry lets one quarter of the work stand for the whole.
2. The circle repeats itself in each quadrant.
3. The circle is symmetrical about both the x-axis and the y-axis.
4. So the whole enclosed area is four times one quadrant.
_Source: syllabus Mathematics Part II, Ch 8 'Application of Integrals'_
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