Răspuns :
Formula perimetrului: 2 · (L + l)
2 · (L + l) = 32| :2
L + l = 16
L = l + 4
Inlocuiesti:
l + 4 + l = 16
2l = 12
l = 6 cm
L = 6 + 4
L = 10 cm
2 · (L + l) = 32| :2
L + l = 16
L = l + 4
Inlocuiesti:
l + 4 + l = 16
2l = 12
l = 6 cm
L = 6 + 4
L = 10 cm
P= 2L + 2l
L=4+l
32= 2(4+l) + 2l
32=8+2l +2l
32=8+4l
24=4l
-4l=-24 /*(-1)
4l= 24
l=6cm
L=4+6=10 cm