For this case, we have that by definition, the area of the trapezoid, shown in the figure, is given by:
[tex]A = \frac {1} {2} (b_ {1} + b_ {2}) * h[/tex]
In this case:
[tex]b_ {1} = 17 \ cm\\b_ {2} = 9 \ cm\\h = 8 \ cm[/tex]
Substituting we have:
[tex]A = \frac {1} {2} (17 + 9) * 8\\A = \frac {1} {2}( 26 * 8)\\A = 104 \ cm ^ 2[/tex]
Answer:
[tex]A = 104 \ cm ^ 2[/tex]
