Question

Find the area of shaded region​

Answer 1

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Answer 2

Answer:

$ob ^{2} = { \alpha }^{2} + { \alpha }^{2}$

$ob = \sqrt{2} \alpha$

area=pi r^2/2

$= \frac{\pi {r}^{2} }{2}$

$= \pi { \alpha }^{2}$