Answer:
72cm
Explanation:
We have 4/6 sides. 4 of them are given, and they are 13.25cm, 7.25cm, 7.75cm, and 22.75cm.
The perimeter is found when you add all the lengths of the sides of a figure.
So far, we can add 13.25+7.25+7.75+22.75 = 51cm.
Let's call the first ungiven side A. We can see that 7.75cm + A = 13.25cm. Using this, we can figure out that A = 13.25-7.75 = 5.5cm.
We can call the second ungiven side B. We see that 7.25cm + B = 22.75cm. So, B = 22.75-7.25 = 15.5cm.
Now, let's add everything together. 51cm + A + B = Perimeter. 51cm + 5.5cm + 15.5cm = 72cm.
Hope this helps! Feel free to ask any questions if this doesn't make sense. :)