Answer:
Lemme explain one step by one
First,i will write an equation
Length times Length equals 196
You can put 196 as square root since it has to be the same number times the same number
12 times 12 is 144
13 times 13 equals 169
14 times 14 equals 196
So the answer is 14.
Explanation:
Hope this helps and if you need more help,feel free to ask
~Marion