# How to Find the Area of a Rectangle

## Finding the Area of a Rectangle

The area of a rectangle is found using the formula:

In this formula, **b** is the length of the base of the rectangle and **h** is the height of the rectangle. The image below shows what we mean by the length of the base and the height:

## Interactive Widget

Use this **interactive widget** to create a rectangle and then calculate its area. Start by clicking in the shaded area.

**Oops, it's broken!Turn your phone on its side to use this widget.**

## How to Find the Area of a Rectangle

Finding the area of a rectangle is easy.

### Question

What is the area of a rectangle with a base of 8 cm and a height of 5 cm, as shown below?

### Step-by-Step:

# 1

Start with the formula:

Area = bh

**Don't forget:** bh = b × h

# 2

Substitute the length of the base and the height into the formula. In our example, b = 8 and h = 5.

Area = 8 × 5 = 40 cm^{2}

### Answer:

The area of the rectangle with a base of 8 cm and a height of 5 cm is 40 cm^{2}.