A farmer $F_1$ has a land in the shape of a triangle with vertices at $P(0, 0)$, $Q(1, 1)$ and $R(2, 0)$. From this land, a neighbouring farmer $F_2$ takes away the region which lies between the line $PQ$ and a curve of the form $y = x^n$ $(n > 1)$. If the area of the region taken away by the farmer $F_2$ is exactly $30\%$ of the area of $\triangle PQR$, then the value of $n$ is
If the area of the region $\{(x,y):1-2x\leq y\leq4-x^2,\,x\geq0,\,y\geq0\}$ is $\dfrac{\alpha}{\beta}$, $\alpha,\beta\in\mathbf{N}$, $\gcd(\alpha,\beta)=1$, then the value of $(\alpha+\beta)$ is:
Consider a square with vertices at \((1, 1)\), \((-1, 1)\), \((1, -1)\) and \((-1, -1)\). Let S be the region consisting of all points inside the square which are nearer to the origin than to any edges. Sketch the region S and find its area.