A 27 inch waist would be a size 10 but your hips are technically a size 12 and bust is a size 14. That is about a size 3/4 or 5/6. Of course the size of your legs and rear could mean that you run a size up or down.
A4 paper is 8.3 ' 11.7 inches in size, as compared to a regular sheet of paper that is 8.5 x 11 inches. A0 paper is 33.1 ' 46.8 inches, and A10 paper is 1.0 ' 1.5 inches. You can find more information here: www.ask.com