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LP bola = 616 m^2
• Dit :
r bola?
• Jawab :
LP bola = 4 . phi . r^2
616 = 4 . 22/7 . r^2
616 . 7 = 88 . r^2
4.312 = 88 . r^2
r^2 = 4.132 / 88
r^2 = 49
r = akar dari 49
r = 7 cm
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Setau saya seperti ini cara nya, semoga membantu! ;)