➗ Cone Slant Height Calculator
Find cone slant height from radius and vertical height.
Result
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How this calculator works
Find cone slant height from radius and vertical height.
Formula
ℓ=√(r²+h²)
Example
Radius 5 and height 12 give slant height 13.
Frequently asked questions
What does the Cone Slant Height Calculator do?
Find cone slant height from radius and vertical height.
Are the results exact?
The calculator follows the displayed formula. Rounded display values may differ slightly from full-precision results.
Can I use negative or decimal values?
Most fields accept decimals and negative values when they make sense for the formula.
How should I check an important result?
Review the formula, verify your entries, and confirm high-stakes work with a qualified teacher or professional.