Question

The tree in your friend's yard casts a shadow that is 27 feet long. Your friend is 5 feet tall and casts a shadow that is 4.5 feet long. What is the height of the tree?

Answer 1

Proportion:- 

 27       4.5
------ =  -------
  x          5

x = height of tree.

4.5 · x = 27 · 5
4.5 · x = 135

135 ÷ 4.5 = 30 

SO,

x = 30

The tree is 30 ft long.

Hope i helped ya!!

Answer 2

Th=Ukn
Ts=27
Fh=5
Fs=4.5
x/27=5/4.5
x=30
The tree is 30 feet tall.