EXPLANATIONEXPLNATION OF SOLUTION
The park is a rectangle and the area of a rectangle is given as
[tex]\begin{gathered} A\text{rea}=L\times B \\ \end{gathered}[/tex]Where L=lenght of the park in miles and B=Width of the park in miles
[tex]\begin{gathered} L=\frac{9}{10},B=\frac{4}{5} \\ \text{Area}=\frac{9}{10}\times\frac{4}{5} \\ \end{gathered}[/tex]Then
[tex]\text{Area}=\frac{9}{5}\times\frac{2}{5}=\frac{18}{25}[/tex]Therefore the area of the park is 18/25 square miles
