Question

2700Kg/m cub=cu cate g/cm cub

Answer 1

2700 kg/mc = 2,7 g/cmc     1 kg = 1 000 g     1 mc = 1 000 000 cmc

Answer 2

$2700 \frac{kg}{ {m}^{3} } = ... \frac{g}{ {cm}^{3} } \\ 2700 \frac{kg}{ {m}^{3} } = \frac{2 \: 700 \: 000}{1 \: 000 \: 000} \frac{g}{ {cm}^{3} } = \frac{27}{10} \frac{g}{ {cm}^{3} } = 2.7 \frac{g}{ {cm}^{3} }$