The area of the region bounded by $$y=-\sqrt{16-x^2}$$ and $$X$$-axis is

The area of the region bounded by the curve $$y^2=8 x$$ and the line $$y=2 x$$ is

The area of the region bounded by the line $$y=2 x+1, X$$-axis and the ordinates $$x=-1$$ and $$x=1$$ is

The area of the region above $$X$$-axis included between the parabola $$y^2=x$$ and the circle $$x^2+y^2=2 x$$ in square units is