16 squared would be 256
36 squared would be 1296
256+ 1296= 1552
HOPE THIS HELPS! ^_^
Now if were talking about the square root then:
The square root of 16 would be 4 because 4 times 4 is 16
The square root of 36 would be 6 because 6 times 6 is 36
4+6= 10