For the vector

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

For the vector

\mathbf{a}=7\hat{i}-24\hat{j}+18\hat{k}

, the magnitude

|\mathbf{a}|

is (a)

25

(b)

\sqrt{949}

(c)

31

(d)

\sqrt{881}