### Instruction: A wheel with radius $1\text{ m}$ is rolled in a straight line through one complete revolution on a flat horizontal surface. How many meters did the center of the wheel travel horizontally from its starting location?### Response: To solve this problem, I need to find the circumference of the wheel, which is the distance it covers in one revolution.
The formula for the circumference of a circle with radius $r$ is $C=2\pi r$.
Plugging in $r=1\text{ m}$, I get $C=2\pi \text{ m}$.
This means that the wheel travels $2\pi \text{ m}$ in one revolution, and so does the center of the wheel, since it stays on the same horizontal line.
Therefore, the answer is $2\pi \text{ m}$.