MCQ
Area enclosed by the circle $x^2 + y^2 = a^2$ is equal to:
- A$2\pi\text{a}^2\text{sq.}\text{ units}$
- ✓$\pi\text{a}^2\text{sq.}\text{ units}$
- C$2\pi\text{a}\text{ sq.}\text{ units}$
- D$\pi\text{a}\text{ sq.}\text{ units}$
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