Question

What is the numerical value of the vector $3\widehat{i} + 4\widehat{j} + 5\widehat{k}$?

• A. $3\sqrt{2}$
• B. $5\sqrt{2}$
• C. $7\sqrt{2}$
• D. $9\sqrt{2}$

Answer 1

Answer: (B)

$5\sqrt{2}$

Answer 2

$\sqrt{3^{2} + 4^{2} + 5^{2}}$