Radius of a Cone Calculator r from V and h. Volume Height Radius 3.003 Step-by-step with your numbers: 1. Values used: 2. Volume = 85 3. Height = 9 4. Radius = 3.003 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! r = √(3V/πh). FAQ Cone? Yes, right circular cone. Related calculators Cone Calculator Find a cone's volume, slant height and surface area. Slant Height of a Cone Calculator l = √(r² + h²). Cone Volume Calculator V = π r² h / 3.