## Geometry: Common Core (15th Edition)

$\frac{64}{25}$
To square a number, we multiply the number by itself. Therefore: $$(\frac{8}{5})^2=\frac{8}{5}\times\frac{8}{5}.$$ To multiply two fractions, we multiply the numerators and the denominators: $$\frac{8}{5}\times\frac{8}{5}=\frac{8\times8}{5\times5}=\frac{64}{25}$$