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maaf lama ya soalnya lagi di itung
keliling : 2 × phi × r
= 2 × 3 , 14 × 5
= 31 , 4 cm
Luas : phi × r × r
= 3,14 × 5 × 5
= 78,5 cm
semoga membantu dan bermanfaat#maaf kalo salah#