Charlie wants to use the mirror method to find the height of the skyscraper across from her apartment. Charlie
calculates the distance between her and the mirror on the ground to be 4 feet. The distance between Charlie
and the skyscraper is 20 feet. Charlie is 66 inches tall. What is the height of the skyscraper?

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

-2/

15.36 per mile

but forgot to round

i am pretty sure