If a square has side length 2 m2 \text{ m}2 m, what is its area in cm2\text{cm}^2cm2?
4 cm24 \text{ cm}^24 cm2
400 cm2400 \text{ cm}^2400 cm2
40000 cm240000 \text{ cm}^240000 cm2
200 cm2200 \text{ cm}^2200 cm2