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