What number times itself equals 20?

Answer 1

20 = 20(1/2) x 20(1/2) = 4.472135954999582
4.4721359549995793928183473374626

Answer 2

The number that, when multiplied by itself, equals 20 is the square root of 20. In this case, the square root of 20 is approximately 4.47. This is because the square root of a number is the value that, when multiplied by itself, gives the original number. In mathematical terms, if x * x = 20, then x = √20.