Question

Find the perimeter of each of the shapes:

An equilateral triangle of side $9cm$.

Answer 1

Determine the perimeter:

Here an equilateral triangle of side $9cm$ is given.

We know that an equilateral triangle has all sides equal.

Perimeter $=$ sum of all sides of the triangle

Perimeter $=9+9+9$

$=27cm$

Hence, the perimeter of this shape is $27cm$.