Answer:
96 cm
Step-by-step explanation:
Here are the lengths of all the sides starting with the left vertical side and moving clockwise:
Left vertical side: 17 cm
Top horizontal side: 25 cm
Right vertical side: 17 cm
Bottom horizontal side at right: 3 cm
Inside vertical side on right side: 8 cm
Inside horizontal side in middle: 11 cm
Diagonal side: 10 cm
Bottom horizontal side at left: 5 cm
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Add all side lengths:
perimeter = 17 cm + 25 cm + 17 cm + 3 cm + 8 cm + 11 cm + 10 cm + 5 cm
perimeter = 96 cm
