Perimeter of Rhombus Formula

When a Rhombus is concerned, it is a flat shape with four same sides and four angles that are NOT necessarily 90 degrees. A rhombus is often called as a diamond or diamond shaped. The total distance traveled along the border of a rhombus is the perimeter of a rhombus. We can also call a square as a rhombus, because it satisfies all the condition that a rhombus has.

Rhombus has:

  • All sides of Equal length
  • Opposite sides have to be parallel.
  • The altitude is a distance at right angles to two sides.
  • The diagonals of a rhombus bisect each other at 90 degrees.

The perimeter of a rhombus is given as:

\[\large P=4\times a\]

Solved Examples

Question: Find the perimeter of a rhombus having side as 5 cm ? 


a = 5 cm

Perimeter of a rhombus = 4 × a
Perimeter of a rhombus = 4 × 5
Perimeter of a rhombus = 20

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