Answer:
18[tex]yd^{2}[/tex]
Step-by-step explanation:
You can find the area of the whole backyard and subtract the area of the patio to find the are of the garden.
Area of patio = 2yd * 3yd = 6[tex]yd^{2}[/tex]
Area of backyard = 6yd * 4yd = 24[tex]yd^{2}[/tex]
24[tex]yd^{2}[/tex] - 6[tex]yd^{2}[/tex]
18[tex]yd^{2}[/tex]
