Cone Diameter Calculator
Find a right circular cone’s diameter from radius, heights, volume or areas.
Formula
d=2r; r=√(l²−h²)=√(3V/πh)=Al/πl=√(Ab/π); At=πr(r+l).
Radius / slant height l: 5 cm · Height h: 4 cm · Volume V: 37.7 mL · Selected area A: 75.4 cm² · Diameter ≈ 200×sqrt((5 cm × 0.01 m/cm)^2-(4 cm × 0.01 m/cm)^2)
How to use
- Choose the known measurements.
- Enter the required fields; leave unused fields unchanged.
- Read diameter in cm.
Examples
- Slant 5 cm and height 4 cm give diameter 6 cm.
Frequently asked questions
What does the length field mean?
Radius in radius mode; slant height l in heights, lateral and total modes.
Which fields are required?
Heights: l,h. Volume: V,h. Lateral or total: area,l. Base: area only.
Which cones are valid?
Right circular cones with positive height; slant height must exceed radius and height.
Sources
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