Răspunsuri

2014-05-03T08:28:38+03:00
200 mm=20 cm    L-l=50-20=30 cm     p=2L+2l     p=2*50+2*30       p=100+60     p=160 cm  
2014-05-03T08:29:38+03:00
Latimea=50cm-200mm=50cm-20cm=30cm
p=(50+30)*2=80*2=160
1 5 1