A) 7
B) 5
C) 1
D) 11
Correct Answer: A
Solution :
Let d be the length of line, then projection on x-axis = dl = 2, projection on y-axis = dm = 3, Projection on z-axis = dn = 6 Now \[{{d}^{2}}({{l}^{2}}+{{m}^{2}}+{{n}^{2}})=4+9+36\] Þ \[{{d}^{2}}(1)=49\] Þ \[d=7\].You need to login to perform this action.
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