A hang glider is soaring over a 100-acre area that consists of thick forest and open fields. In the diagram below, the forested area is shaded in green and the open field is the white space. Upon landing, the hang glider realizes she has dropped her keys.
A trapezoid is split into 3 sections. The bottom section is 35 acres, the middle section is 20 acres, and the top section is 45 acres. The top and bottom sections are shaded.
What is the probability that her keys have landed within the forest?
0.2
0.6
0.8
1.0