Question

find the missing side length. assume that all intersecting sides meet at right angles. include the correct unit in your answer.

Explanation:

Step1: Analyze vertical side - lengths

The sum of vertical side - lengths on the left should equal the vertical side - length on the right. The vertical side - lengths on the left are 4 cm and 5 cm.

Step2: Calculate the missing side

The missing vertical side length is the sum of 4 cm and 5 cm. So, $4 + 5=9$ cm.

Answer:

9 cm