1.

If G is the centroid of the triangle PQR, where vec(GP)=2hat(i)+hat(j)+3hat(k),vec(GQ)=hat(i)-hat(j)+2hat(k), then the area of the triangle PQR is

Answer»

`SQRT(35)sq.units`
`(3sqrt(35))/(2)sq.units`
`sqrt(35)/(2)sq.units`
`(5sqrt(35))/(2)sq.units`

ANSWER :B


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