Surface Area of Hexagon
2026-02-28 21:38 Diff
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Last updated on August 5, 2025

A hexagon is a 2-dimensional shape with six sides. The surface area of a hexagon refers to the total area covered by its shape. In this article, we will learn about the surface area of a hexagon and how to calculate it.

What is the Surface Area of a Hexagon?

The surface area of a hexagon is the total area occupied by its boundary or surface. It is measured in square units.

A hexagon is a flat, six-sided polygon with six angles. Regular hexagons are polygons where all sides and angles are equal, while irregular hexagons have sides and angles of different lengths and degrees.

The surface area of a hexagon typically refers to the area within its six sides.

Surface Area of a Hexagon Formula

A hexagon can be regular or irregular, and the formula to calculate the area differs accordingly.

For a regular hexagon, the area can be calculated using the formula: Area = (3√3/2) × s² Where s is the length of one side of the hexagon.

For irregular hexagons, the area can be determined by dividing it into simpler shapes, like triangles, and calculating their combined areas.

Regular Hexagon Area

The area of a regular hexagon, where all sides are equal, can be calculated using the formula:

Area = (3√3/2) × s² square units

Here, s is the length of one side. This formula arises because a regular hexagon can be divided into six equilateral triangles.

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Irregular Hexagon Area

To find the area of an irregular hexagon, divide it into simpler shapes such as triangles or rectangles, calculate the area of each shape, and then sum them up. There is no single formula for an irregular hexagon, as it depends on the dimensions and organization of the simpler shapes.

Perimeter of a Hexagon

The perimeter of a hexagon is the total length of its outer boundary.

For a regular hexagon, the perimeter is calculated by multiplying the length of one side by six:

Perimeter = 6 × s

Where s is the length of one side. For an irregular hexagon, add the lengths of all six sides.

Confusion between Regular and Irregular Hexagons

Students may assume that all hexagons are regular. Always verify if the hexagon is regular (all sides and angles equal) or irregular, as the approach to finding the area differs.

Problem 1

Given s = 4 cm. Use the formula: Area = (3√3/2) × s² = (3√3/2) × 4² = (3√3/2) × 16 = 41.57 cm²

Okay, lets begin

A regular hexagon has a side length of 7 cm. Find its perimeter.

Explanation

Perimeter = 42 cm

Well explained 👍

Problem 2

Use the formula: Perimeter = 6 × s = 6 × 7 = 42 cm

Okay, lets begin

An irregular hexagon is divided into two triangles and one rectangle. The triangles have areas of 10 cm² and 15 cm², and the rectangle has an area of 20 cm². Find the total area of the hexagon.

Explanation

Total Area = 45 cm²

Well explained 👍

Problem 3

Sum the areas of the simpler shapes: Total Area = 10 + 15 + 20 = 45 cm²

Okay, lets begin

Find the area of a regular hexagon with a side length of 5 cm.

Explanation

Area = 64.95 cm²

Well explained 👍

Problem 4

Area = (3√3/2) × s² = (3√3/2) × 5² = (3√3/2) × 25 = 64.95 cm²

Okay, lets begin

If the perimeter of a regular hexagon is 48 cm, find the length of one side.

Explanation

Side length = 8 cm

Well explained 👍

It is the total area enclosed within the six sides of the hexagon.

1.What formulas are used to find the surface area of a hexagon?

For regular hexagons, use Area = (3√3/2) × s². For irregular hexagons, divide into simpler shapes and sum their areas.

2.What is the difference between regular and irregular hexagons?

Regular hexagons have equal sides and angles, while irregular hexagons have unequal sides and angles.

3.Can a hexagon be divided into triangles to find its area?

Yes, especially for irregular hexagons, dividing into triangles helps in calculating the area.

4.What unit is surface area measured in?

Surface area is always measured in square units like cm², m², or in².

Common Mistakes and How to Avoid Them in the Surface Area of a Hexagon

Students often make mistakes while calculating the surface area of a hexagon, leading to incorrect answers. Below are some common mistakes and ways to avoid them.

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Seyed Ali Fathima S

About the Author

Seyed Ali Fathima S a math expert with nearly 5 years of experience as a math teacher. From an engineer to a math teacher, shows her passion for math and teaching. She is a calculator queen, who loves tables and she turns tables to puzzles and songs.

Fun Fact

: She has songs for each table which helps her to remember the tables