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# Area of Regular Pentagon Calculator Online

The Area of a Regular Pentagon Calculator is a specialized online tool designed for computing the area of a pentagon where all sides are of equal length and all interior angles are equal. This calculator simplifies the process of determining the area, providing a quick, accurate, and reliable method for students, architects, and anyone involved in geometry-related tasks. Unlike manual calculations, which are prone to errors, this calculator ensures precision, saving time and enhancing productivity.

## Formula of Area of Regular Pentagon Calculator

The formula for calculating the area of a regular pentagon is given by:

In this formula,

• `s` represents the length of a side of the regular pentagon.
• `√(25 + 10√5)` is an irrational number, often denoted as τ (tau), which is related to the golden ratio. While calculators might have a specific button for τ, it can also be approximate as 3.236.

This formula is rooted in geometric principles and provides a direct method to calculate the area without needing to divide the pentagon into simpler shapes, ensuring accuracy and efficiency.

## Table for General Terms

This table offers a quick reference for common side lengths, eliminating the need for manual calculations. It serves as a handy guide for frequent users, aiding in diverse applications ranging from educational assignments to professional projects.

## Example of Area of Regular Pentagon Calculator

Consider a regular pentagon with a side length of 5 units. Using the formula:

Area = (5² √(25 + 10√5)) / 4 ≈ 43.01 square units

This example demonstrates how to apply the formula to calculate the area of a regular pentagon, offering a straightforward approach to solving geometry problems.

## Most Common FAQs

Q1: Can I use this calculator for pentagons with unequal sides?

A1: No, this calculator is specifically design for regular pentagons, where all sides and angles are equal.

Q2: How accurate is the calculator?

A2: The calculator is highly accurate, utilizing the exact formula for the area of a regular pentagon. The only limitation is the accuracy of the input provided by the user.