Cone slant height
Solve cone slant height with your values and follow each calculation step.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
l = √(r²+h²)
Variables & units
- Radius
- cm · minimum 0, maximum 1000000
- Perpendicular height
- cm · minimum 0, maximum 1000000
Worked example
Radius 3 cm and perpendicular height 4 cm give slant height 5 cm.
Assumptions
Slant height and perpendicular height are different.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
Use the default input values to find the answer. The reset icon restores those values.
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