**Irregular shapes** have sides and angles of **any length and size.**

The area of a shape is the amount of space taken up by a 2D shape or surface.

We measure the area in either **cm² or m².**

When we have a **regular shape, **we can calculate the area using the formula *length x width.*

However, when we have an **irregular shape**, we can estimate the answer by counting the number of squares it covers.

**e.g. Look at the shape below.**

In order to find the area of this shape, follow these steps:

**1.** Count the complete squares as one.

**2.** Count squares covered more than half as one.

**3.** Ignore the squares that are covered less than half.

**4.** Add together the number of complete squares and squares covered half or more.

By doing this, we can then find an **'approximate' **area.

Complete squares = **13**

Squares covered more than half = **5**

**Approx Total Area = 18 cm²**

Want to understand this further and learn how this links to other topics in maths?

Why not watch this video?