How do you find volume in this problem?

Question

a graduated cylinder contains 31.5 mL of water. a rock is dropped into the graduated cylinder, and the water level in the graduated cylinder rises to 43.0 mL. what is the volume of the rock?

Answer 1

i 100% guanrentee you that its 11.5 as i go to harvard uni and am taking a course in mathematics and engaged science

Answer 2

volume of the raised water = volume of the rock

and by simple conversion.....

one litre = 1 decimetre cube

Answer 3

The volume of an object in the cylinder is the final reading minus the initial reading:

43-31.5 = 11.5 mL