The perimeter of the triangle MNK is 132 cm. The sum of the sides MN and NK is 79 cm, which is 11 cm

The perimeter of the triangle MNK is 132 cm. The sum of the sides MN and NK is 79 cm, which is 11 cm less than the sum of the sides MK and NK. Find the side lengths of a triangle

conditions of the problem:
P triangular MNK = 132 cm
MN + NK = 79 cm
MK + NK = (MN + NK) + 11 cm
MN, NK, MK -?
decision:
1.132-79 = 53 (cm) – MK
2.79 + 11 = 90 (cm) – MK + NK
3.90-53 = 37 (cm) – NK
4.132-90 = 42 (cm) – MN
answer: 53 cm, 37 cm, 42 cm



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