For this case we have that by definition, the area of a trapezoid is given by:[tex]A = \frac {(B + b) * h} {2}[/tex]
Where:
B: It is the major base
b: It is the minor base
h: It's the height
According to the data we have:
[tex]B = 10ft\\b = 5ft\\h = 4ft[/tex]
Substituting:
[tex]A = \frac {(10 + 5) * 4} {2}\\A = \frac {15 * 4} {2}\\A = \frac {60} {2}\\A = 30[/tex]
So, the area of the figure is [tex]30 \ ft ^ 2[/tex]
ANswer:
Option D
