No.
No, 80 is a not perfect square.
No but 81 is a square number
80 is not a square number 1 is, 4 is, 9 is, 16 is, 25 is, 36 is, 49 is, 64 is, 81 is, 100 is 80 is not
No, there aren't any square numbers between 70 and 80. From 70 to 80, no number has a perfect square root, so no square number exists between 70 to 80.
A square number between 50 and 80 is 64, which is the square of 8 (8 x 8 = 64). Another square number in this range is 49, but it is below 50, while 81 is above 80. Therefore, 64 is the only square number that fits the criteria.
No but 81 is a square number
The positive square root of 80 is approximately 8.94. Since 8.94 is closest to 9, the number closest to the positive square root of 80 is 9.
No
The square root of -6400 is not a real number because the square root of a negative number is not defined in the real number system.
64
Yes
1,4,9,16,25,36,49,64