If you mean a circle, use the formula area = pi x radius2. Approximating pi by 3.14 should be close enough for most purposes.
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11 square feet.
165 square feet
11*10 = 110 square feet
11 x11 = 121
area = 2*pi*radius**2area = 2*pi*(22/2)**2area = 242*piarea = 760.27 sqftImproved Answer:-The radius is 11 feet so the area = pi*112 = 380.133 square feet rounded to 3 decimal places