Question

Amandoua si primiti 25 p

Answer 1

10) P= 96
l1=l2
l3=40
(P-l3):2=l1=l2
(96-40):2=56:2=28=l1=l2
11) P= 56
l1=l2
l3=3/7*56
(P-l3):2=l1=l2
(56-3/7*56):2=(56-24):2=32:2=16=l1=l2
l3= latura 3
l2= latura 2
l1= latura 1
P= perimetru

Answer 2

1)P=96 m
L1=L2   L3=40m
P=L1+L2+L3
96=2L+40
2L=96-40
L=56;2=28
L1=L2=28 m
2)P=56 m
L1=56*3/7=24         L1=24m      L2=L3
P=L1+L2+L3
56=24+2L
2L=56-24
L=32:2
L=16
L2=L3=16m