The[color=#980000] 8-ft wall[/color] shown here stands 27 ft from the building. The [color=#1e84cc][b]straight blue beam[/b][/color] connects a point on the ground to a point on this building (located far right). [br][br]Drag the [color=#980000][b]brown point[/b][/color] along the ground to move the position (and thus change the length) of the beam. [br][br]What is the shortest possible length of this beam?

[i]Developed for use with Thomas' Calculus, published by Pearson.[/i]