Before Mr Dlamini builds his fish pond, he decides he wants to make the patio smaller. Using a ruler, measure the new perimeter of the patio on the diagram (in cm)

Perimeter \(= \text{5}\text{ cm} + \text{5}\text{ cm} + \text{5}\text{ cm} + \text{5}\text{ cm} = \text{20}\text{ cm}\)