The area (in sq. units) of the region bounded by $y = 2\sqrt{1 - x^2}$, $x \in [0, 1]$ and $x$-axis is equal to

The area (in sq. units) of the region in the first quadrant enclosed between the line $x + y = 2$, parabola $y^2 = x$ and the x-axis, is

The area (in sq. units) of the region enclosed by the ellipse $16x^2 + 25y^2 = 400$ is

The area of the region bounded between the line $x=3$ and the parabola $y^2=6x$ is:

The area bounded by the parabola $y^2 = 4ax$ and $x^2 = 4ay$ is :

Area of the region bounded by the curve $y=\sin x, y=\cos x$ and $x-$axis, $\left(0\le x\le\frac{\pi}{2}\right)$ is;

The area (in sq. units) of the region bounded by the line $y = x + 2$, $x = 0$, $x = 1$ and $y = 0$ is