Calculate the area and perimeter of a regular pentagon. Just enter the length of one of its sides. A simple and accurate geometry tool for students. 

What's the Area of That Five-Sided Shape? Let's Find Out.

We see them in architecture, in nature, and famously, in the shape of the Pentagon building in Washington, D.C. The five-sided pentagon is a unique and fundamental shape in the world of geometry.

While calculating the perimeter of a regular pentagon is straightforward (just multiply the side length by five), finding its area is a different story. The formula can be complex and requires a bit of trigonometry, making it a tricky problem for many geometry students. A pentagon calculator is a specialized tool that does the heavy lifting for you, providing an accurate answer in an instant.

Who Uses a Pentagon Calculator?

This tool is particularly helpful for:

• Geometry Students: A great way to check homework answers and understand the properties of a 5-sided polygon.

• Designers & Architects: Incorporating pentagonal shapes into designs and needing to know their dimensions and area.

• DIY Enthusiasts: Creating projects that involve cutting or building with pentagonal shapes.

How to Calculate the Properties of a Pentagon

All you need is one simple measurement to get started.

1. Open the Pentagon Calculator: Go to the FreeXTool Pentagon Calculator.

2. Enter the Side Length: Input the length of one of the sides of your regular pentagon.

3. Get Your Results: The tool will instantly calculate and display the pentagon's perimeter and area.

Pro-Tip: Understanding the "Apothem"

When you study pentagons in math class, you'll hear the word "apothem." The apothem is the distance from the center of the pentagon to the midpoint of one of its sides. The formula for the area of a pentagon is (5/2) * side * apothem. Our calculator figures out the apothem for you behind the scenes to give you the final, clean answer.

Tackle any geometry problem with these essential calculators:

• Polygon Calculator

• Perimeter Calculator

• Surface Area Calculator