On Friday, March 9, 2018 at 7:07:10 AM UTC-6, Dan Daly wrote:
On Thursday, March 8, 2018 at 11:53:36 PM UTC-5, wrote:
Wing Area 203.8 sq.in.
Wing Loading 2.61 oz./sq.ft.
Flying Weight 2.8oz (86grams)

What is wrong with my math below?

203.8 sq.in. / 144 = 1.4153 sq.ft.

2.8 oz / 1.4153 sq.ft. = 1.9784 oz./sq.ft. (??? but this is not 2.61 oz./sq.ft.???)

1.9784 oz./sq.ft. / 16 = 0.12365 pound/sqft

My converter says 86g = 3.033563 us oz... or 2.76596 troy oz...

And that's why the metric system rules worldwide - except for some backwater countries. What a silly way to use your brain cells, maybe we have found the reason for our trade deficit...