if 2i+3j-6k, 6i-2j+3k are two consecutive sides of a triangle,then perimeter of triangle is?

plz ans fast.

ans:sqr ^74+14

See if u consider two vectors

if 2i+3j-6k, 6i-2j+3k are two consecutive sides of a triangle,then perimeter of triangle is? plz ...

if 2i+3j-6k, 6i-2j+3k thn third vector wil be 8i-j-3k so its magnitude is going to be 7+7+sqr 74 .