What solid is formed when rotating a square about a horizontal or vertical axis through the center of the square?

The solid figure formed is a cylinder.

Step-by-step explanation:

Rotation is an example of transformation in which a given figure is rotated about a reference point (origin) or line (axis). This converts majorly a two dimensional figure into a three dimensional figure or shape.

When a square is rotated about an axis, either horizontal or vertical, it generates another shape called a cylinder. Therefore, a 2D figure(square)  generates a 3D (cylinder) shape due to rotation about an axis.

The cylinder would have circular surfaces with diameter which is the same as the length of the side of the initial square.

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answer: 819.89 miles across america

step-by-step explanation: