So area of a trapezoid is [tex] A=\frac{b_1+b_2}{2} *h [/tex] , with b as our bases and h as our height. Since we have all those measurements, we can solve it as such:
[tex] A=\frac{4.7+9.9}{2} *5\\\\ A=\frac{14.6}{2} *5 \\\\ A=7.3 *5 \\\\ A=36.5\ mi^2 [/tex]
In short, your answer is 36.5 mi^2, or A.
