What's the square root of 98

9.8 or the full version 9.899494937

98 is not a perfect square, so its square root is irrational. That means that

it can never be written exactly on paper with digits. Written as a decimal,

it keeps going forever, and never ends.

The beginning is: 9.89949 ...

Also, don't forget ...

Every number has two square roots ... one positive and one negative.

The other square root of 98 begins - 9.89949 ... and keeps going forever.