Question

find the perimeter of the figure below. notice that one side length is not given.
assume that all intersecting sides meet at right angles.
be sure to include the correct unit in your answer.
7 cm
6 cm
10 cm
8 cm
15 cm
try one last time

Explanation:

Step1: Find unknown vertical side

The total vertical height on the left is 10 cm, and the given shorter vertical segment is 6 cm. The unknown vertical side is $10 - 6 = 4$ cm.

Step2: Find unknown horizontal side

The total bottom horizontal length is 15 cm, and the given top horizontal segment is 7 cm. The unknown horizontal side is $15 - 7 = 8$ cm.

Step3: Sum all side lengths

Add up all sides: $10 + 15 + 4 + 8 + 6 + 7$
Calculate step-by-step:
$10+15=25$; $25+4=29$; $29+8=37$; $37+6=43$; $43+7=50$

Answer:

50 cm