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r = 0,7 cm
π = 3,14
KM = 10
KM = 2πr/d
10 = 2×3,14×0,7 cm)/d
10 = 4,396 cm/d
d = 4,396 cm/10
d = 0,4396 cm
n = p/d
n = 4,4 cm/0,4396 cm
n = 10
Jadi jumlah ulir yang harus dibuat
adalah 10 buah