calculated the mass of a solid metal cylinder with a density of 4g/cm,a diameter of 2cm and a leng
问题描述：
calculated the mass of a solid metal cylinder with a density of 4g/cm,a diameter of 2cm and a leng
计算一个密度4G／cm坚实的金属筒质量，直径2cm、长9米
答
calculated the mass of a solid metal cylinder with a density of 4g/cm^3 ,a diameter of 2cm and a length of 9 meterThe mass of the cylinder=4x3.14x1x1x900=11304 g=11.304 kg.