Answer
$\frac{7}{36}$ square feet
Work Step by Step
The area of a triangle is $\frac{1}{2}$ the product of its base and height.
$\frac{7}{8}*\frac{4}{9}*\frac{1}{2}=\frac{7*4*1}{8*9*2}=\frac{2*2*7}{2*2*2*2*3*3}=\frac{7}{2*2*3*3}*\frac{2*2}{2*2}=\frac{7}{2*2*3*3}*1=\frac{7}{36}$
