объём прямоугольного паралепипеда, рёбра кототрого рвны 3 дм , 2дм 3/4дм.ПОМОГИТЕ ПОЖЕЛУСТА:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(:’-(!!!!!!!!!!!!!!!!![