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Roda berputar = 200×
Jarak tempuh = 440 m = 44.000 cm
π = 22/7
Ditanya :
Keliling?
jari jari ?
Jawab:
K = Jarak ÷ banyak putaran
= 44.000 ÷ 200
= 220 cm
Keliling = 2 •π • r
220 = 2 • 22/7 • r
220• 7 = 2•22 •r
1.540 = 44r
r = 1.540 ÷ 44
r = 35 cm
Jadi jari jarinya 35 cm
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