20
Square root of 81
square root of 125/80 = 1.25 or 5/4
√80 = 8.94427191
16
No, the square root of 6400 is 80, and 3200 squared is 10240000.
√6400 = 80* * * * *OR -80
(80)^(1/2) * (125)^(1/2) = 2*(20)^(1/2)*5*(5)^(1/2) = 10 * (100)^(1/2) = 100
Thr square root of 80656 is 284
Try the square roots of 1 and 6561, which are 1 and 81. Their difference is 80 which is one less than 81. And that is the square of 9. In fact this works whenevr the first of the two numbers is a square number. So the purpose of the question is not clear.
square root(80) = 8.94427191 80 squared = 6400 not sure what one you want.
4 times the square root of 5