Question

find the unknown side length. assume that all intersecting sides form right angles. include the correct units in your answer.

Explanation:

Step1: Analyze horizontal side - lengths

The sum of horizontal lengths on the left - hand side parts should equal the horizontal length on the right - hand side. The horizontal lengths on the left are 8 ft and 5 ft.

Step2: Calculate the unknown side length

The unknown side length $x$ is the sum of the horizontal segments on the left. So $x=8 + 5=13$ ft.

Answer:

13 ft