Posted by Please help!!! on Tuesday, January 11, 2011 at 9:12pm.
p= 2L + 2W
P= 2*8.6 + 2*2.5
P= 17.2 + 2*2.5
P= 17.2 + 5
P= 22.2 inches or centimeters or whatever units they are in.
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