It is: 9
9
The standard form of 12 squared is 122
11 squared in standard form is... 11 x 11= 121
0.81 squared equals 0.81 x 0.81 The result in standard form is 0.6561
17 squared = 172 = 289
M
1,225
25
400
32 + 63 = 9 + 216 = 225
The standard form is 361 (19 x 19 = 361).