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Verified answer
Semoga membantu yaa :)Verified answer
Bangun Ruang Kerucutrk = jari jari kerucut
d = diameter lingkaran = 28 cm
keliling alas kerucut = 1/2 keliling lingkaran
2π rk = 1/2 π d
2 rk = 1/2 d
rk = 1/4 d
rk = 1/4 (28)
rk = 7 cm