Hello!
I'm pretty new here, used Solidworks for about 7-8 months. Now, I need to draw something that is beyond my knowledge so I decided to ask SW Forum.

Umm...  I need get a piece like in Foto1 (only that orange-colored). I have the full extrusion (1400) but i need to make it decreasing it's dimension from 1400 to 200.

I have the flatten surface too (as Sketch4).

Any help with this problem?
Thank you in advance!