We need to find the total area for her garden. The garden is formed by a coumpounding structure of a square and a rectangle. The square has sides equal to 4 centimeters, while the rectangle has the width of 5 cm and the length is shown by the sum below:

The formula for the area of the square is:

Where l is the length of the side. Applying the data from the problem we have:

The formula for the area of the rectangle is:

Applying the data from the problem we find:
![A_{\text{rectangle}}=14\cdot5=70\operatorname{cm}^(2)]()
The total area of the garden is the sum of the areas above. We calculate it below:
![A_{\text{total}}=16+70=86\operatorname{cm}^(2)]()