# Frequently Asked Questions Welcome to the ExoPie FAQ! Here are some common questions regarding our core functions. ## How does the `get_radius` function work? The `get_radius` function calculates the total planetary radius based on the inputted mass and interior structure models. **Usage Example:** ```python from exopie import get_radius radius = get_radius(Mass=1.5,cmf=0.3) **Official API Reference:** ```{automethod} exopie.get_radius