What is the direction of areal velocity of the earth around the sun?

Explanation

Areal velocity of earth around the sun is given by `(d vec A)/(dt) = (vec L)/(2m)`,
where `vecL` is the angular momentum.
As, `vecL = vecr xx vecp = vecr xx m vecupsilon. :. (d vec A)/(dt) = (1)/(2m) (vecr xx m vec upsilon) = (vec r xx vec upsilon)/(2)`
The direction of areal velocity `((d vecA)/(dt))` is the same as that of `(vecr xx vec upsilon)`, i.e.,
perpendicular to the planet containing `vecr` and `vec upsilon` and is directed as given by Right hand rule.