Răspunsuri

2014-05-20T15:19:11+03:00
P=l+l+L+L=784
2l+2L=784 /:2
l+L=392
L=l+120
l+l+120=392
2l=272
l=136

L=136+120
L=256
2014-05-20T15:21:05+03:00
/......................../    120  / Lungime 
/......................../    120  / Lungime 
/......................../latime 
/......................../latime
784-120x2=784-240=544cm
544cm:4=136cm are latimea dreptunghiului
136cm+120cm=256 cm are lungimea dreptunghiului