Suppose a 6-ft person wishes to determine the height of a footbridge connecting two buildings, as shown in the figure below. To do this, this person stands at one end of the bridge (point S) and looks down to a point directly below the other end (point T). With the help of a companion, point P is determined to form two triangles. Find the height of the footbridge, if 
ft and 
class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_3a3303a4c18b4eb287a1e1361" /> ft.
?
?
A. 9 ft
B. 6 ft
C. 72 ft
D. 8 ft
E. 48 ft
Answer: E
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