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Step-by-step explanation:
Area = πr²
2) 11² x 3.14 = 379.94
3) 3² x 3.14 = 28.26
4) 5² x 3.14 = 78.5
5) 6.5² x 3.14 = 132.665
6) 7.2² x 3.14= 162.7776