Can someone tell me what the deal is with square roots that my sister keeps talking about pick any of those problems you want just tell me what the deal is

1a) 6          b) 8
2a) 10        b) 13
3a) 9          b) 17
4a) 12        b) 14
5a) 16        b) 25
6a) 3          b) 1
7a) 16        b) 7
8a) 11        b) 5

square root : a number multiplied by itself.

example √9 = √(3*3) = 3

hope it helps