Question 1151471
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12 inches = 1 ft


Let
A = height of post = 6 ft
B = length of post's shadow = 1 ft
C = height of cell phone tower = unknown
D = length of cell phone tower's shadow = 116 ft


The right triangles formed by the sun's rays are similar triangles, so we can set up the proportion below, plug in the given values, and solve for C.
A/B = C/D
6/1 = C/116
6*116 = 1*C .... cross multiply
696 = C
C = 696


The cell phone tower is <font color=red size=4>696 feet</font> tall.
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