Answer:
11
Step-by-step explanation:
its something you basically have to just memorize and know... i dont know how to explain it, but like basically not all numbers have an even number square root. to have an even number for a square root, the number has to be able to be divided by the same 2 numbers. like 121, for it to have a whole number square root, it has to be able to be divided by 2 same numbers. or doubles... 11 times 11
11 squared is 121
square root of 121 is 11
hope this helps.
mark me brainliest :D
