Răspunsuri

2014-04-03T22:00:05+03:00
Cel mai usor e grafic

a + b + c = 630

a  I---I
b  I---I---I---I---I
c  I---I---I

1parte = 630:7=90 = a

b=4parti = 4 x 90 = 360

c=2parti = 2 x 90 = 180

Verificare
90+360+180=630