The area of the region bounded by the curve $$y=2 x-x^2$$ and X-axis is

Area bounded by the lines $$y=x, x=-1, x=2$$ and the $$X$$-axis is

The area of the region included between the parabolas $$y^2=8 x$$ and $$x^2=8 y$$, is

The area bounded by the parabola $$y^2=4 a x$$ and its latus-rectum $$x=a$$ is