# How much, sand or gravel do I need?

## Square or rectagular gardens

The area of a square or rectangular garden is easy to calculate.
Simply multiply the length by the width by the depth:
For example: 5 metres long by 2 metres wide by 10cm (0.1 metres) deep is 5 x 2 x0.1 = 1m^{3}

## Odd-shaped Gardens

For odd-shaped gardens try to average the width & length.

## Circular Areas

Circular areas use the formulae: Area = 3.1415 x radius x radius (where the radius is half the distance across the circle).