Hi this is not my first part but i keep messing up when mixing up the resin could sumone please help me with how much resin i would need for a flat part measuring 3ft x 2ft made of 200g carbon, 3 layers of 290g woven glass,peel ply and mesh?

weigh everything including mesh, peelply etc and mix that weight of resin to aim for around 50/50, if you are infusing then allow extra for the tub and the hoses