Cone Surface Area Calculator

Calculate the total surface area of a cone quickly and easily. Just input the radius and slant height.

Input Parameters

Enter the radius and slant height of the cone.

units
units

Surface Area Result

Formula:
$$A = \pi r (r + s)$$
Calculated Surface Area (A):
units2

Visual Representation

rsCone

Understanding Cone Surface Area

The surface area of a cone is the total area that the surface of the cone occupies. It is the sum of the area of the base (a circle) and the lateral surface area (the curved surface).

Formula

The formula to calculate the total surface area (A) of a cone is given by:

$$A = \pi r (r + s)$$

Where:

  • \( r \) is the radius of the circular base.
  • \( s \) is the slant height of the cone (the distance from the vertex to any point on the edge of the base).
  • \( \\pi \) (Pi) is a mathematical constant approximately equal to 3.14159.

How to Use This Calculator

  1. Enter the radius of the cone's base in the 'Radius (r)' field.
  2. Enter the slant height of the cone in the 'Slant Height (s)' field.
  3. Click the 'Calculate' button to compute the surface area.
  4. The result, along with the formula and a visual representation of the cone, will be displayed below.
  5. You can copy the calculated surface area to your clipboard by clicking the 'Copy' button.

This tool is helpful for students, educators, and anyone needing to quickly calculate the surface area of a cone for mathematical, educational, or practical purposes.

Learn more about cones and surface area on resources like Wikipedia and educational math websites.