Răspuns :
P ABCD = 86 cm
L = 33 cm
P D = 2 x L + 2 x l
l = 86 - 33 x 2
l = 86 - 66 = 20 : 2 = 10
l = 10
L = 33 cm
P D = 2 x L + 2 x l
l = 86 - 33 x 2
l = 86 - 66 = 20 : 2 = 10
l = 10