Figure for flagpole shadow:
Figure for your shadow:
You asume that the triangles are similar triangles.
In similar triangles the ratio between corresponding sides is the same:
[tex]\frac{x}{5.5ft}=\frac{20ft}{7ft}[/tex]
You use the equation above to find the lenght of the flagpole (x):
[tex]x=\frac{20ft\cdot5.5ft}{7ft}=\frac{110ft^2}{7ft}=15.71ft[/tex]The lenght of the flagpole is 15.71 feet
