Using a sketch to make another part

Hi.

I'm new at solidworks and i'm modeling a curvature tank. So, i need to make sure dat the walls that creat a "Joint" be "coincidents". Is there an option when i can use a sketch from the Part1 to make the exact curvature on the Part2, and when i change it on Part1 it change automatically on Part2?

This is the first wall, and i need the second wall to be concentric with this one, but i want it to chance automatically or close to it, when i change something on this first wall.

Sorry for the english,

BG,

Luís Félix

SolidworksSketching