What is the volume of a cone?

V = (1/3) x pi x r^2 x h, which is one-third the volume of a cylinder with the same base and height.

How do you find the slant height?

The slant height is l = sqrt(r^2 + h^2), using the Pythagorean theorem on the radius and height.

Cone Volume Calculator

Enter the radius and height of a cone to find its volume, slant height, lateral surface area, and total surface area. Volume formula: V = (1/3) x pi x r^2 x h.

Inputs

Radius

Height

Results

Volume

314.1593 cubic units

Slant Height

Total Surface Area

282.7433 sq units

Lateral Surface Area

204.2035 sq units

Base Area

78.5398 sq units

Last updated: April 16, 2026

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