Question

There are two square roots of 25. Why is there only one answer for the radius of the button?

Answer 1

sqrt(25) = +5 and -5
radius of button cannot be negative

Answer 2

We know that,

Square root of 25 are 5 and -5.

i.e.
`√(25)` = 5 and -5.

Now, this square root of 25 is representing the radius of a button.

Also, it is known that the radius of a button cannot be negative.

Thus, -5 is discarded.

Hence, the radius of the button is 5 i.e. there is only one answer for the radius of the button.