An object’s density is 15 g/cm^3 and its volume is 3 cm^3. What is its mass? PLsss help me im stuck

Formula,

Density= mass/volume

Rearrange the formula to make mass the subject:

Mass= Density × Volume

Mass= 15 × 3

Mass= 45g

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

answer; the correct answer is (composition);