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Backyard Concreting

We are looking at having the rest of the backyard completely concreted. See attached pic (measurements are not scaled). There is already a 4M x 5M concrete part that looks like 1M x 1M paver, and I'd like it to be the same. The sides of the area isn't perpendicular so unable to estimate total sqm, but I've put some measurements in the pic. Please give me an estimate quote of concreting, including drainage and whatever is required. There is a big plant on the corner of the 9.3M and 11.6M and we are wanting to keep it there and not concreted.