Posted by **Randall** on Tuesday, March 27, 2012 at 11:59pm.

A parallelogram is defined by vectors OA=(4,3) and OB=(1,1). Determine the length of the diagonals

OA+OB=(4,3)+(1,1)

=(5,4)

sqrt(5^2+4^2)

=6.403

OA-OB=(3,2)

sqrt(3^2+2^2)=3.60

Therefore the length of diagonals are 6.40 and 3.60 units.

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