The perimeter of a triangle with sides \[3\mathbf{i}+4\mathbf{j}+5\mathbf{k},\,\] \[4\mathbf{i}-3\mathbf{j}-5\mathbf{k}\] and \[7\mathbf{i}+\mathbf{j}\] is [MP PET 1991]

The perimeter of a triangle with sides \[3\mathbf{i}+4\mathbf{j}+5\mat

1.	The perimeter of a triangle with sides \[3\mathbf{i}+4\mathbf{j}+5\mathbf{k},\,\] \[4\mathbf{i}-3\mathbf{j}-5\mathbf{k}\] and \[7\mathbf{i}+\mathbf{j}\] is [MP PET 1991]
A.	\[\sqrt{450}\]
B.	\[\sqrt{150}\]
C.	\[\sqrt{50}\]
D.	\[\sqrt{200}\]
Answer» B. \[\sqrt{150}\]

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The perimeter of a triangle with sides \[3\mathbf{i}+4\mathbf{j}+5\mathbf{k},\,\] \[4\mathbf{i}-3\mathbf{j}-5\mathbf{k}\] and \[7\mathbf{i}+\mathbf{j}\] is [MP PET 1991]

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