Penjelasan dengan langkah-langkah:
r = 20 cm
d = 2r = 2(20) = 40cm
keliling roda
= phi . d
= 3,14 . 40
= 125,6cm
jarak =6,28km
= 6,28 . 100000
= 628000cm
banyak roda berputar
= jarak/keliling
= 628000/125,6
= 5000 kali
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Penjelasan dengan langkah-langkah:
r = 20 cm
d = 2r = 2(20) = 40cm
keliling roda
= phi . d
= 3,14 . 40
= 125,6cm
jarak =6,28km
= 6,28 . 100000
= 628000cm
banyak roda berputar
= jarak/keliling
= 628000/125,6
= 5000 kali