Cross-Sections, Rotations of 3D Objects Practice Test

A right circular cylinder stands upright. A plane slices the cylinder perpendicular to the circular bases and passes through the cylinder’s central axis (so the plane contains the axis). Which description correctly identifies the resulting shape?

A rectangular prism has dimensions $6$ cm (length), $4$ cm (width), and $5$ cm (height). A plane slices the prism parallel to the base (the $6\times 4$ face). Which shape results from the cross-section shown?