Question

The sides of a triangle are of lengths 12.4cm,16.8cm,13.7cm what is the perimetre of the triangle

Answer 1

Step-by-step explanation:

perimeter of triangle = sum of all sides

perimeter of triangle = 12.4cm+16.8cm+ 13.7cm

perimeter of triangle = 42.9cm

Answer 2

Answer: 42.9cm

The perimeter of the triangle is 42.9cm

Concept:

The perimeter of any shape is the sum of its sides. Perimeter is the total length of its outer surface. So here a triangle is there and the length of its 3 sides is given. So all we need to do is add all of them to get the perimeter

Given:

Length₁ = 12.4cm

Length₂ = 16.8cm

Length₃ = 13.7cm

Solution:

Perimeter = Length₁ + Length₂ + Length₃

                 = 12.4 + 16.8 +13.7

                 = 42.9