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↬Panjang lintasan yang dilalui roda :
= Keliling roda × banyak putaran
= 2 . π . r × 250
= 2 . 22/7 . 35 × 250
= 2 . 22 . 5 × 250
= 220 × 250
= 55.000 cm ( ÷ 100 )
= 550 m