I am looking for assistance with setting up chemistry questions.

Ultra pure silicone is used to make solid-state devices, such as computer chips. What is the mass of a circular cylinder of silicone that is 12.40 cm long and has a radius of 4.00cm? The density of silicone is 2.33 g/cm3

I'll help you get started. You multiply the volume of the cylinder in cm^3 by the density in g/cm^3, to get the total mass in grams. The volume of the cylinder is its length times the area of the circle that forms the cylinder's base. Recall that the area of a circle is equal to \pi times the radius squared.

Post back with the answer, and someone will be glad to check it for you.