Titanium is used in airplane bodies because it is strong and light. It has a density of 4.55 g/cm^3. If a cylinder of titanium is 7.75 cm long and has a mass of 153.2 g, calculate the diameter of the cylinder. (V=pi*r^2*h, where V is the volume of the cylinder, r is the radius, and h is the height.)

Answer 1

volume = mass/density
Solve for volume.

Volume = pi*r^2h.
Solve for r, then diameter = 2r.

Answer 2

what is the density of a metal that has a mass of 3.5 grams and a volume of 1.6^3 ?