A square number is an integer that is the square of another integer (ie 9 is a square number because it is the square of 3).
The square root of 515 is 22.6936...etc , and therefore cannot be a square number
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the square root of 515 is 22.693611436
515 is closest to 500.
No.
To find 20 percent of a number, multiply the number by 0.2. In this instance, 0.2 x 515 = 103. Therefore, 20 percent of 515 is equal to 103.
515