Respuesta :

Answer:

20 cm

Step-by-step explanation:

When you add the lengths of any two sides in a triangle, it has to be greater than the length of the third side.

So...

14 + 7 > side 3

14 + 7 > 22 is false

14 + 7 > 20 is true

22 is false because 14+7
So the correct choice would be 20
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