Area between two curves; choosing when to integrate with x or y?

[emlekarc]

Hello!

I'm having some trouble determining, when trying to find the area between two curves, when to integrate with respect to y or respect to x, given two equations only?

Thanks!

 

[SteamKing]

You should always draw a sketch of the two curves and decide which would be the easier integration: w.r.t. x or w.r.t. y.