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*jari2 lingkaran= 6:2 = 3*
Luas lingkaran= pr^2 = 3,14 x 3^2 = 3,14x9 = 28,26cm
Luas daerah yg diarsir = 48-28,26 = C. 19,74cm
semoga membantu. jika berkenan jadikan jawaban terbaik ^^