Answer :
The square root of a number is the value that, when multiplied by itself, gives the original number. In the case of 169, the square root is 13 because 13 x 13 = 169.
The square root is a very important mathematical concept, used in a wide range of fields, including physics, engineering, and finance.
One of the most common uses of the square root is in calculating the magnitude of a vector in two or three dimensions. The magnitude of a vector represents its length, and can be calculated using the Pythagorean theorem, which involves taking the square root of the sum of the squares of the vector's components.
The square root is also used in calculating interest rates, such as the annual percentage rate (APR) on a loan or credit card. By taking the square root of the interest rate, we can determine the amount of interest that will be charged over a given period of time.
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