Perimeter of a Rhombus

Learn how to find the perimeter of a rhombus.

Perimeter of a Rhombus Lesson

The Perimeter Formula

A rhombus is a quadrilateral with 4 equal sides, a pair of opposing equal acute angles, and a pair of opposing equal obtuse angles.
The formula for perimeter of a rhombus is given as:
P = 4s
Where P is the perimeter and s is the side length.

perimeter of a rhombus
The Formula for the Perimeter of a Rhombus
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Perimeter of a Rhombus Example Problems

Let's go through a couple of example problems together to practice finding the perimeter of a rhombus.

Example Problem 1

Find the perimeter of a rhombus with a side length of 10.


  1. Since we are given the side length, we can plug it straight into the formula.
  2. P = 4s
  3. P = 4(10) = 40
  4. The perimeter of the rhombus is 40.

Example Problem 2

A rhombus shaped table is measured to have a perimeter of 192 cm. What is the length of one of the table's sides?


  1. Let's plug the perimeter into the equation and solve for side length.
  2. P = 4s
  3. 192 = 4s, s = 192/4
  4. s = 48 cm.
  5. The table's side length is 48 cm.
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