Calculate the perimeter of an equilateral triangle with a side equal to 11 cm.

Given:
a = 11 cm;
b = 11 cm;
s = 11 cm;
P =? cm.
A triangle is a geometric shape, a polygon with three sides. In an equilateral triangle, the lengths of the sides are equal to each other. The sum of the lengths of all sides is called the perimeter of the triangle. Calculate the perimeter of the triangle using the formula: P = a + b + c.
P = 11 + 11 + 11 = 33 (cm)
Answer: 33 cm perimeter of an equilateral triangle.