200cm/detik =....km/jam sama caranya

200 : 100.000 x 3.600=0,002x 3600
= 7,2

200 cm/dtk = 200 x 10^-5/1/3.600 km/jam
= 0,002 x 3.600 km/ jam
= 3,6 x 2km/jam
= 7,2 km/jam