28 feet contains 28 feet.
Assuming you meant 28 feet x 28 feet, the answer is 784 sq feet.
784 square feet
Circumference of the pool = 28*pi feet
28 inches 2.3333333333 feet.
19 feet by 28 feet gives you 532 square feet.
28 feet is 8.53 meters.
28*25 = 700 sq ft
224 square feet. (8 x 28 = 224)
28 x 46 = 1,288 square feet.
28+23+28+23 = 102 feet
If the dimensions are in feet then: 28*36 = 1008 square feet