Question

256мм/с перевести в си
20км/с
3.6км/ч

Answer 1

$20 \frac{km}{c} = 20 \times 1000 = 20000 \frac{m}{c} \\ 256 \frac{mm}{c} = 256 \times \frac{1}{1000} = 0.256 \frac{m}{c} \\ 3.6 \frac{km}{h} = 3.6 \times \frac{ 1000}{3600} = 1 \frac{m}{c}$