Convert 7m to Centimeters: Metric Unit Conversion Problem

To solve this problem, we need to apply the following step:

• Convert the given length from meters to centimeters using the conversion factor.

Let's work through this:

The conversion factor between meters and centimeters is $1\text{ m} = 100\text{ cm}$. Therefore, to convert $7$ meters to centimeters, we multiply by this factor:

$7 \text{ m} \times 100 \text{ cm/m} = 700 \text{ cm}$

Thus, the length of $7$ meters is equivalent to $700$ centimeters.

The correct choice that matches this result is choice $2$.