Perimeter is the distance around a two-dimensional shape. 3 + 3 + 3 + 3 + 3 = 5×3 = 15. The perimeter of a circle is called the circumference:

Perimeter is the total length of the boundary of any closed shape. Explore and learn with concepts, definitions, formulas, solved examples, and practice questions at Cuemath.

A perimeter is the length of a closed boundary that encompasses, surrounds, or outlines either a two-dimensional shape or a one-dimensional line. The perimeter of a circle or an ellipse is called its …

In geometry, the perimeter of a shape is defined as the total length of its boundary. The perimeter of a shape is determined by adding the length of all the sides and edges enclosing the shape.

Use this perimeter calculator to easily calculate the perimeter of common bodies like a square, rectangle, triangle, circle, parallelogram, trapezoid, ellipse, regular octagon, and sector of a circle.

May 26, 2026 · In geometry, perimeter refers to the boundary of a closed plane figure. You might remember calculating perimeters in school. If each side of an equilateral triangle measures 9 feet, …

Apr 23, 2024 · For each example of how to find perimeter in this guide, we will use a simple 3-step method for finding perimeter that you can use to find the perimeter of any shape and to solve any …

What is the perimeter? The perimeter of a two-dimensional shape is the sum of the lengths of each of the sides.

May 26, 2026 · Learn what perimeter is in math — how to calculate it for rectangles, polygons, and circles, with formulas, common mistakes, and practice problems.

How do we calculate the perimeter of a shape? To find the perimeter of a shape, we add all of the shape's side lengths.