Agranite monument has a volume of 25365.4 cm3 the density of granite is 2.7 g/cm 3 use this information to calculate the mass of the monument to the nearest tenth

To find mass you V x D = M.  If I did it right it comes out to 68,486.6 g.

This is called visual imagery. it is a memorization technique wherein an idea or a term is associated with an image, this in remembering ideas, especially as humans are very visual learners. this is also why visual aids a lot for memory retention.