Răspunsuri

2014-06-03T20:22:52+03:00
Ppatrat=4l=4x56=224cm
Pdreptunghi=2L + 2l
L=7l
2L+2l=224
2x7l + 2l=224
16l=224
l=224:16
l=14
L=7l=7x14=98
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