Răspuns :
2l+2L=130
l+L=65
l=5K
L=8K
5k+8k=65
13k=65
k=5
l=5*5
l=25
L=5*8
L=40
l+L=65
l=5K
L=8K
5k+8k=65
13k=65
k=5
l=5*5
l=25
L=5*8
L=40
a,b-laturile dreptunghiului
{a,b} dp {8,5} --> a=8K
b=5k
P=2a+2b=16K+10K-->130=26K-->K=5-->a=40(lungimea)
b=25(latimea)
{a,b} dp {8,5} --> a=8K
b=5k
P=2a+2b=16K+10K-->130=26K-->K=5-->a=40(lungimea)
b=25(latimea)