bonjour
300 000 km/s = 300 000 x 3 600 = 1 080 000 000 km / h
1.5 x 10 ⁸ : 1.08 x 10 ⁹
≅ 1.39 x 10 ⁻¹ h
≅ 0.139 h
≅ 8 min 20 s
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bonjour
300 000 km/s = 300 000 x 3 600 = 1 080 000 000 km / h
1.5 x 10 ⁸ : 1.08 x 10 ⁹
≅ 1.39 x 10 ⁻¹ h
≅ 0.139 h
≅ 8 min 20 s