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Kell = jarak ÷ putaran
= 15400 ÷ 100
= 154 cm
karena kell = pi x d
154 = 22/7 x d
154 ÷ 22/7 = d
154 x 7/22 = d
49 cm = diameter
semoga membantu :D
Keliling = jarak : putaran = 15400 : 100 = 154 cm
K = pi x d
154 = 22/7 x d
d = 154 : 22/7
d = 154 x 7/22
d = 49 cm