Junior Mathematical Olympiad 2018 Section A Q9

The triangle $PQR$ is isosceles with $PR=QR$. Angle $PRQ=90^{\circ}$ and length $PQ=2$ cm. Two arcs of radius 1 cm are drawn inside triangle $PQR$. One arc has its centre at $P$ and intersects $PR$ and $PQ$. The other arc has its centre at $Q$ and intersects $QR$ and $PQ$.

What is the area of the shaded region, in $cm^2$?