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1-58.

The three-dimensional shape below is called a cylinder. Its bottom and top bases are both circles, and its side is perpendicular to the bases. What would the shape of a flag need to be in order to generate a cylinder when it rotates about its pole? (You may want to refer to problem 1‑49 to review how flags work.) Homework Help ✎

1-58 Cylinder 

The flag would have to be a rectangle. The height of the cylinder would be the same as the height of the rectangle, and the cylinder's radius would be the same as the width of the rectangle.