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# Slant Height of a Cone Calculator Online

The Slant Height of a Cone Calculator helps you find the slant height of a cone easily. The slant height is the distance from the base of the cone to its top along the surface of the cone. This tool makes it simple to get this measurement without doing the math by hand.

### Formula of Slant Height of a Cone Calculator

To calculate the slant height, use this formula:

Where:

• l is the slant height
• r is the radius of the base of the cone
• h is the height of the cone

This formula comes from the Pythagorean theorem, which applies to the right triangle formed by the radius, height, and slant height of the cone.

### Pre-calculated Slant Heights Table

Here is a table with some common values for radius and height, and their corresponding slant heights:

This table allows you to quickly find the slant height without calculating each time.

### Example of Slant Height of a Cone Calculator

Let's look at an example to see how the calculator works.

If a cone has a radius of 3 units and a height of 4 units, follow these steps to find the slant height:

1. Square the radius: 3^2 = 9
2. Square the height: 4^2 = 16
3. Add the squared values: 9 + 16 = 25
4. Take the square root of the sum: sqrt(25) = 5