Question

Find the perimeter of each of the shapes:

A triangle of sides $3cm,4cm$ and $5cm$.

Answer 1

Determine the perimeter:

Here a triangle of sides $3cm,4cm$ and $5cm$ is given.

We know that a triangle with different sides length is called a scalene triangle.

Perimeter $=$ sum of all sides of the triangle

Perimeter $=3+4+5$

$=12cm$

Hence, the perimeter of this shape is $12cm$.