Updated: Question in GATE 2012 Civil Engineering Paper with Solution

June 21, 2012

A question in GATE 2012 Civil Engineering Paper with Solution has been updated:

For the parallelogram OPQR shown in the sketch, $\cfrac{}{OP}$ $= a \hat i + b \hat j\ and$ $\cfrac{}{OR} = c \hat i + d \hat j$ . The area of the parallelogram is

ac + bd
ab – cd
ad + bc
ad – bc