Pythagorean Theorem Calculator › Legs 5 and 8
Hypotenuse of 5 and 8
Hypotenuse = √89 ≈ 9.433981
For a right triangle with legs 5 and 8, the hypotenuse c satisfies a² + b² = c²:
5² + 8² = 25 + 64 = 89, so c = √89 ≈ 9.433981 (√89).
Other triangles with leg 5
5 & 1 · 5 & 2 · 5 & 3 · 5 & 4 · 5 & 5 · 5 & 6 · 5 & 7 · 5 & 9 · 5 & 10 · 5 & 11 · 5 & 12
Frequently asked questions
What is the hypotenuse of a triangle with legs 5 and 8?
It is √89 ≈ 9.433981 (or √89 in simplified radical form). Using a² + b² = c²: 5² + 8² = 89.
Is 5, 8, … a Pythagorean triple?
No. The hypotenuse √89 is not a whole number, so 5 and 8 do not form a Pythagorean triple with an integer hypotenuse.