To determine the radius of the cone from the given responses (8, 10, 12, 4), we would typically need more specific information about the cone, such as its height or slant height, or some context like the volume or surface area of the cone.
However, since the provided responses seem to suggest possible values for the radius without additional context, it's not possible to determine the correct answer without more information.
If you have any further details or a specific question regarding a cone, feel free to provide those, and I can assist you accordingly!