19^2
361
324
529
24^2
576
625
square root of 529
21
24
23
18^2
289
256
square root of 576
22
17 squared
225
25 squared
484
square root of 256
16
18
19
22 squared
441
400
square root of 196
14
13
15 squared
20 squared
square root of 441
square root of 324
15
square root of 625
25
17