5.5/8 = x/20
x=5.5*20/8 = 13.75 feet
2
48
15 feet high
48
Using trigonometry its height is 12 feet
To cast a 19 foot shadow the building would have to be 26.91 feet tall. Each foot of building/tree casts 8.47 inches of shadow.
A 1 foot shadow I think.
63 feet
2
48
15 feet high
48
Using trigonometry its height is 12 feet
27.3 feet
It works out as 3.75 feet
17.45 feet.
4 is to 6 as 5 is to X. 4/6 = 5/X. X = 7.5 feet.