Approx 314.16 square feet.
74.4 ft2
450
132.73
12.56
1590.4
176.625
346
615.75
153.93804 square feet.
3.14159265 square feet.
A circle with a diameter of 24 feet has an area of 452 square feet.
A circle with a diameter of 18 feet has an area of 254.5 square feet.