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MathNet 2006 — Part 04 Question 40

Math Olympiad Vault · MathNet 2006 — Part 04

Question 40

Two circles with the same radius intersect at $X$ and $Y$. Let $P$ be a point on an arc $XY$ of a circle inside the other. Knowing that the segment $XY$ is long $3$ and that the angle $X\widehat{P}Y$ measures $120^\circ$, what is the area of ​​the intersection between the two circles?


(A) $2\left(\pi-\frac{1}{4} \sqrt{3}\right)$

(B) $3(\pi-\sqrt{3})$

(C) $\frac{1}{2}(3 \pi-\sqrt{3})$

(D) $2\left(\pi-\frac{2}{3} \sqrt{3}\right)$

(E) $2\left(\pi-\frac{3}{4} \sqrt{3}\right)$.