Its impossible to say, because weight varies according to height. A 5' 7" size 8-10 woman will weigh significantly more than a 5'0" one.
A better question might be "what is the average body fat percentage of a dress size 8-10" The answer to that would probably be around 18-20%.
810 stones
It depends on the size of the squares!
17% of 810= 17% * 810= 0.17 * 810= 137.7
5% of 810= 5% * 810= 0.05 * 810= 40.5
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On average, 810 miles, depending on where you start from.
810
810/2 = 405 810/3 = 270 * 810/4 = 202.5 810/5 = 162 810/6 = 135 810/9 = 90 810/10 = 81 so 810 is divisible by 2 3 5 6 9 10 but not by 4