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C = 2πr = 48 cm
r= 48/2π = 7.639 cm
Entonces ¿cual tomar?
Si r = 7 cm A = πr² = ( 3.1416 ) ( 7 ) ( 7 ) = 153.9384 cm²
Si r = 7.639 A = πr² = ( 3.1416 ) ( 7.639 ) ( 7.639 ) = 183.3259 cm²