In a triangle ABC, AB = 4 cm, BC = 7 cm, AC = 6cm, and in a triangle MNK, MK = 8cm, MN = 12 cm, KN = 14 cm.

In a triangle ABC, AB = 4 cm, BC = 7 cm, AC = 6cm, and in a triangle MNK, MK = 8cm, MN = 12 cm, KN = 14 cm. Find the ratio of the perimeters of these triangles

Perimeter of a triangle = the sum of the lengths of all sides.
Therefore, Perimeter of triangle ABC = AB + BC + AC
Perimeter ABC = 4cm + 7cm + 6cm = 17cm
Perimeter of a triangle MNK = MN + MK + KN
MNK perimeter = 12cm + 8cm + 14cm = 34cm
A ratio is a quotient of two numbers.
17: 34 – we can reduce by 17 and get 1: 2
Answer: 1: 2