So we know that the area of only the pool is 198 ft^2. To find the area of the entire yard, multiply length times width so:
Area of yard = 22 ft x 30 ft
Area of yard = 660 ft^2
Now subtract the pool area from the yard area:
660 - 198 = 462
So the area of only the yard is 462 ft^2
Hope this helps!!