due is 30 need help

1. A liquid has a volume of 15.5mL and a mass of 22.35g. What is the density of the liquid? 2. In the Background section of this experiment, two methods for determining the volume of a solid were described. State which Method ( 1 or 2 ) would be best for determining the density of each of the following objects, and explain your reasoning. a. An unevenly-shaped rock b. A cylindrical cork stopper c. A metal sphere 3. A metal cylinder with a mass of 28.99g has a length of 8.50cm and a radius of 0.65cm. What is the density of the cylinder? Hint: Vcylinder=r2l