Volumes with Cross Sections: Triangles/Semicircles Practice Test

Find the correct volume setup: base region between $y=x$ and $y=x^2$ on $0,1$, semicircle cross sections perpendicular to $x$.

Which integral gives the volume: base bounded by $x=y$ and $x=0$ for $0\le y\le 2$; cross sections ⟂ $y$-axis are equilateral triangles?