Answer:
12 square feet
Explanation:
The area of a square is the square of its side length.
The area of the whole garden is (8 ft)² = 64 ft².
The area of the center section is (4 ft)² = 16 ft².
The remaining area is ...
64 ft² - 16 ft² = 48 ft²
One fourth of that area is ...
(48 ft²)/4 = 12 ft²
Each of the 4 equal sections is 12 square feet.