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Mapel : Matematika
Tentang : Bangun Datar
Pertanyaan yg diajukan : 1
Pembahasan :
Diketahui :
- Keliling (K) : 2,2 m
• Satuan cm : 220 cm
Ditanya :
- Jari - Jari (r)
Cara :
Jika dinyatakan dalam satuan meter (m) maka :
Jadi, jawabannya adalah 35 cm atau 0,35 m (dalam satuan m). Silahkan dipilih menurut soal.
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Verified answer
Mapel : matematikaBab : Lingkaran
K = 2,2 m
K = 2,2 × 100 = 220 cm
K = phi × d
220 = 22/7 × d
220/22/7 = d
220 × 7/22 = d
70 = d
d = 70 cm
r = 1/2 d = 1/2(70) = 35 cm
r = 35/100 = 0,35 m