How do you find out volume of hollow thin cylinder with varying thickness Height750mm Top Dia-780mm Bottom Dia-460mm Top Thickness-45mm Bottom Thickness-64mm Density of Material Density-1.28?

To find the volume of a hollow thin cylinder with varying thickness, you can calculate the volume of the outer cylinder and subtract the volume of the inner cylinder. First, determine the outer radius (top and bottom) using the top and bottom diameters divided by two, and subtract the respective thickness to find the inner radius. Use the formula for the volume of a cylinder, ( V = \pi r^2 h ), for both the outer and inner cylinders, and then compute the difference to get the hollow volume. Finally, to find the mass, multiply the volume by the density of the material (1.28).