Square numbers of integers falling between 50 and 90 are:
82 = 64
92 = 81
90
The number is 90.
81; because 92 is 81.
140
fd 50 rt 90 fd 50 rt 90 fd 50 rt 90 fd 50
90
36 is a square number between 30 & 40. 36 is 6 squared.
64 and 81 are squares of whole numbers. 64 is the square of 8 (8x8=64) and 81 is the square of 9 (9x9=81).
89
The number is 90.
81; because 92 is 81.
90
140
25, 36, 49, 64, 81
fd 50 rt 90 fd 50 rt 90 fd 50 rt 90 fd 50
The number is the square root of 90
I believe that 4604 works.