You can break the shape up into a rectangle and a right triangle.
Use your trig ratios to find the missing sides.
Add all the sides up and you have your perimeter!
//



//







//

<em>*notice how one of the 10 is left out because it is inside the shape so we can't use that to find perimeter.</em>

IQR=36-16.. which would give you 20!
If I'm correct she hiked 1.47 miles of the trail in percentages
ABF= 28 degrees
BCD= 28 degrees since vertical angle are congruent
ABC= 180 -28 = 152 degrees
I don’t know if you meant 7 hours or 7 1/2 hours, but if it was in 7 hours, the answer would be around 15 square feet. If it was 7 1/2 hours, it would be 14 square feet.