The vectors and form a parallelogram whose area is square units

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

The vectors

\vec{a}=c\mathbf{i}+\mathbf{j}

and

\vec{b}=5\mathbf{k}

form a parallelogram whose area is

5\sqrt{10}

square units. Determine the possible value(s) of

c