Răspunsuri

2014-08-22T13:25:48+03:00
P=l+l+L+L
P=2l+2L
L=12
l=12*2/3 => l=24/3 => l=8

P=2*12+2*8
P=24+16
P=40 cm
2014-08-22T13:26:32+03:00
Latimea=12:3ori2=4ori2=8
Perimetrul=8 ori 2+12 ori 2=16+24=40