Question

The projection of a line segment on the coordinate axes are $2,3,6$. Then, the length of the line segment is

• A. $7$
• B. $5$
• C. $1$
• D. $11$

Answer 1

The correct option is A $7$

Length = $\sqrt{(2{)}^2+(3{)}^2+(6{)}^2}$

$=\sqrt{4+9+36}$

$=\sqrt{49}$

$=7$