Answer
69.3 $ft^{2}$
Work Step by Step
Create a proportion by using the ratios of the areas. In problem 2, you found the ratio of the areas to be equal to 16:9.
$\frac{16}{9}$=$\frac{A}{39}$
Cross multiply.
9A=16(39)
9A=624
Divide both sides by 9
A=69.4