Răspunsuri

2014-06-02T10:19:57+03:00


P=2(L+l)

A=L*l

80cm=8dm

40=8l

l=5

P=2(8+5)

P=2*13

P=26

1 5 1
2014-06-02T10:20:30+03:00
L = 80
Aria=lxL=40 dm patrati=400cm patrat
80xl=400
l=400:80
l=50

P=l+l+L+L
P=50+50+80+80
P=100+160
P=260 cm