The

**magnitude**of a given vector a = [a_{1}, a_{2}, a_{3}] can be found using the formula:Magnitude of vector a = √(a

_{1}^{2}+ a_{2}^{2}+ a_{3}^{2})To find the magnitude of a given vector, simply enter the coordinates of the vector below and then click the “Calculate” button.

Magnitude of vector a: **9.643651**

**Explanation:**

Magnitude of vector a = √(2^{2}+5^{2}+8^{2}) = 9.643651