Well I don't have square feet. They're size 10 D's---so they are a little longer than wide so if I wanted to be correct they are rectangular, not square.
As for the ache, wht yes they do, so you could say my Rectangular are achers,,,usually the toes, do there are five of em, and the left heel has a stone bruise so its got another ache.
Now lets di the math--I got two rectangular feet with 11 aches. So the number of rectangular feet in an ache is: 2 rectangular feet/11 aches 0r about ewo tenths rectangular foot per ache.