4 3 4 111.6 3 r = 111.6 cm3 = (3.1416)r3 r= 3 = 2.987 cm V= 3 3 4(3.1416) 3A ... with it absent. density =mass 28.4 g rock = = 2.76 g/mL = 2.76 g/cm3 volume 44.1 ... can be found using dimensional analysis. ethanol mass = 25 L gasohol 1000 mL ..... 100.00 g solution = 9.95 103 g solution 1 kg sucrose 10.05 gsucrose 53.