Question

underoot 149 answer of this is

Answer 1

12.20 is the answer of this

Answer 2

149 is a prime number. The expression √149 cannot be reduced any further. Its only factors are 1 and 149.

A calculator would tell you it is approximately 12.2065556157. There are several methods for working this answer, such as through successive approximations. We know that the square root of 12 is 144 and the square root of 13 is 169, so we know it lands between there. Successive approximations can be used to continue to "guess" at a close approximation until you reach the level of precision you need.