To solve this problem, draw the situation for a better comprehension:
As we can see, the situation describes a right triangle and we can use pythagorean theorem to solve it.
To do this, use the corresponding units.
For inches:
[tex]\begin{gathered} h=\sqrt[]{84^2-48^2} \\ h=\sqrt[]{7056-2304} \\ h=\sqrt[]{4752} \\ h=68.9 \end{gathered}[/tex]The suspect is 68.9 inches high.
Convert this height to feet:
[tex]68.9in\cdot(\frac{1ft}{12in})=5.74ft[/tex]The suspect is 5.74 feet high.
