Answers

2014-01-07T17:23:17+08:00
I Think mm = Is To Inches so area perimiter is preseted with the area's perimiter if you got a 12mm ruler you can place on a area that is on a wall to reposite the perimiter :)
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2014-01-07T22:29:32+08:00
By finding the perimeter of square
s+s+s+s=n                                   s=side
by finding the area of square
sxsxsxs                                        s=side        
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