# How do you work out the area of a triangle?

## Area of a triangle

To calculate the area of a triangle, multiply the height by the width (this is also known as the 'base') then divide by 2.

Find the area of a triangle where **height = 5 cm** and **width = 8 cm**.

5 × 8 = 40 ÷ 2 = 20

The area is **20cm²**.