80-15=65 80x65=5200x2=10400 114400:5200=22см2ширина 65x22x2=2860 80x22=1760 10400+2860+1760=15020см2
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80-15=65 80x65=5200x2=10400 114400:5200=22см2ширина 65x22x2=2860 80x22=1760 10400+2860+1760=15020см2