Răspuns :
Răspuns:
6.
a) l=3,5 cm
- P=4×l => P=14 cm
b) l1=1×1/2 cm = 3/2 cm
l2=3 cm
l3=3/4 cm
l4=3/4 cm
- P= 3/2+ 3+ 3/4 + 3/4 => P=6 cm
c) l= 3,18 cm
- P= 4× 3,18 => P=12,72 cm
d)l1=2,3 cm
l2=1×1/5= 6/5 cm
- P= 2×2,3 + 2×6/5 => P=4,6+12/5 => P=7 cm
Răspuns:
6.
a) l=3,5 cm
b) l1=1×1/2 cm = 3/2 cm
l2=3 cm
l3=3/4 cm
l4=3/4 cm
c) l= 3,18 cm
d)l1=2,3 cm
l2=1×1/5= 6/5 cm