## Geometry: Common Core (15th Edition)

59 $ft^{2}$
Find the ratio of corresponding sides. $\frac{16}{12}$=$\frac{4}{3}$ The ratio of the areas is the square of the ratio of corresponding sides. $\frac{4^{2}}{3^{2}}$=$\frac{16}{9}$ Set up a proportion using the ratio of the areas found above. $\frac{16}{9}$=$\frac{105}{A}$ Cross multiply. 16A=9(105) 16A=905 Divide both sides by 16. A=59.0625 Area is approximately 59.