Three Dimensional Geometry Question 75

Question: If the projections of a line on the co-ordinate axes be 2, ?1, 2, then the length of the lines is

Options:

A) 3

B) 4

C) 2

D) $ \frac{1}{2} $

Show Answer

Answer:

Correct Answer: A

Solution:

$ r=\sqrt{4+1+4}=3 $ .