The perimeter of an equilateral triangle is 27 cm. The side length was increased by 2 times. Find the perimeter of the new triangle.

The perimeter of a triangle is the sum of all its sides. In an equilateral triangle, all three sides are equal. Let’s take the side of the triangle as x cm.
Then the perimeter value will look like this:
x + x + x = 27
3x = 27
x = 9
The length of the side of the triangle is 9cm.
The side length of the new triangle is 2 cm longer:
2) 9 cm + 2 cm = 11 cm side length of the new triangle.
Now let’s find the perimeter of the new triangle:
3) 11 cm + 11 cm + 11 cm = 33 cm.
Answer: the perimeter of the new triangle is 33 cm.