could you please break it down step by step for me? thank you! :)

You have two objects made of the same substance. Object 1 is a cube with a mass of 272.1g. You measure the side of the cube using a ruler and find it to be 3.17cm. Object 2 is a sphere with a mass of 136.1g. You find the volume of the sphere using water displacement. The volume of the water in a graduated cylinder initially is 120.0mL, and when the sphere is added the new volume is 135.8mL. Determine the volume of Object 1 , in cm3, using the length of the side