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PythLab
Right-triangle hypotenuse in one step.
a² + b² = c² relates the two legs of any right triangle to its hypotenuse — it works because the squares built on each leg literally tile to cover the square built on the hypotenuse, a relationship provable with nothing more than rearranged shapes.
Carpenters use it to confirm a corner is truly square (the 3-4-5 rule), and it's the basis for finding the shortest distance between two points — GPS, TV screen sizes, and construction diagonals all lean on this same relationship.
Hypotenuse c
5
a² + b² = c²
What you entered
Square leg a
3²= 9Square leg b
4²= 16Sum of squares
9 + 16= 25Hypotenuse (square root)
√25= 5Result
Hypotenuse c: 5
For a right triangle with legs 3 and 4, the hypotenuse is 5 — the longest side, opposite the right angle.