The 3-4-5 Rule Calculator is designed to calculate the hypotenuse or other sides of a right triangle based on given side lengths, following the 3-4-5 rule. In the Basic Calculator, you can enter values for Side A and Side B to find the Hypotenuse. Alternatively, leave one side blank to solve for that side using the Pythagorean theorem.
For a more complex calculation, switch to the Advanced Calculator mode, where you can input Angle between Side A and B, along with lengths of Side A and Side B, to compute the Hypotenuse based on the angle. Simply click Calculate to view the result or Reset to clear all fields.
Input Field Definitions
| Input Field | Purpose |
|---|---|
| Length of Side A (units) | Enter the length of side A to calculate the hypotenuse or other sides in a right triangle. |
| Length of Side B (units) | Specify the length of side B for the calculation. |
| Length of Hypotenuse (units) | Displays the calculated hypotenuse length based on sides A and B. Leave blank to auto-calculate. |
| Angle between Side A and B (degrees) | Input the angle between sides A and B for advanced calculations. |
| Length of Side A (units) (Advanced) | Enter the length of side A for advanced hypotenuse calculation. |
| Length of Side B (units) (Advanced) | Specify the length of side B in the advanced calculator. |
| Length of Hypotenuse (units) (Advanced) | Shows the calculated hypotenuse based on the entered angle and side lengths. |
How To Calculate
Example 1 – Basic Calculation
| Step | Calculation Process |
|---|---|
| Step 1 | Enter Length of Side A as 3 and Length of Side B as 4. |
| Step 2 | Leave Length of Hypotenuse blank. |
| Result | The calculator displays Length of Hypotenuse as 5, following the 3-4-5 rule. |
Example 2 – Advanced Calculation
| Step | Calculation Process |
|---|---|
| Step 1 | Enter Angle between Side A and B as 90 degrees, Length of Side A as 5, and Length of Side B as 12. |
| Result | The calculator shows the Length of Hypotenuse as approximately 13, using the angle and side lengths provided. |