$\frac{1 \text{ m}^2}{(3.28084 \text{ ft})^2}$

$(39.37 \text{ in})^2 \times \frac{1 \text{ ft}^2}{144 \text{ in}^2}$

$\frac{1 \text{ m}}{100 \text{ cm}} \times \frac{1 \text{ in}}{2.54 \text{ cm}} \times \frac{1 \text{ ft}}{12 \text{ in}}$

All of the above