Which weighs more : a solid cylender of gold with a height of 5cm and a diameter of 6cm or a solid cone of platinum with a height of 21 cm and a diameter of 8 cm if gold has a density of 19.30 g/cm3 and platinum has a density of 21.40 g/cm3 (answer and work please)

Question

anonymous · Answer

help please

anonymous · Answer

First you need to find the volume of each. Given a cylinder with radius 3cm and height 5 cm we can find the volume (π3^2*5) to be 45π. If we multiply this by the density (45π*19.3) we get the weight to be 2727.09 grams. 
I'll leave you to find the weight of the platinum given the volume of a cone is 1/3 BH.