
Joe M. answered 05/16/19
High School Teacher with 10 Years Experience Tutoring Geometry
Hi!
The weight of the cube in grams is the volume of the cube (in cubic centimeters) times the weight per cubic centimeter.
Volume of a cube is found by cubing the edge, which means here the volume is 8*8*8 = 512 cubic centimeters.
That means the mass is 512 * 2.7 = 1,382.40 grams.
Thanks and good luck!
Joe