MCQ
The total plane angle subtended by a circle at its centre is ......... $rad$
- A$\pi$
- ✓$2 \pi$
- C$\frac{2 \pi}{3}$
- D$\frac{\pi}{2}$
✓
Answer
Correct option: B.
$2 \pi$
b
(b)
(b)
The total plane angle is $360^{\circ}$ or $2 \pi \,rad$.
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