Evaluate ∫01∫01−x2x2+y2 dy dx\int_0^1 \int_0^{\sqrt{1-x^2}} \sqrt{x^2+y^2} \, dy \, dx∫01∫01−x2x2+y2dydx.
π/6\pi/6π/6
π/4\pi/4π/4
π/2\pi/2π/2
1/31/31/3