80
81; because 92 is 81.
No but 81 is a square number
Infinitely many, since every number in that range is a square of some other number. There are 7 perfect square numbers.
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
64
It is 64.
A clown
50 80
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.
80
It is: 50
It is: (20+80)/2 = 50
To calculate the square footage of a rectangular area, you multiply the length by the width. In this case, the length is 80 feet and the width is 50 feet. Therefore, the square footage would be 80 feet x 50 feet = 4000 square feet.
65
81; because 92 is 81.
No, 80 is a not perfect square.