Pythagorean Theorem Calculator › Legs 3 and 9
Hypotenuse of 3 and 9
Hypotenuse = √90 ≈ 9.486833
For a right triangle with legs 3 and 9, the hypotenuse c satisfies a² + b² = c²:
3² + 9² = 9 + 81 = 90, so c = √90 ≈ 9.486833 (3√10).
Other triangles with leg 3
3 & 1 · 3 & 2 · 3 & 3 · 3 & 4 · 3 & 5 · 3 & 6 · 3 & 7 · 3 & 8 · 3 & 10 · 3 & 11 · 3 & 12
Frequently asked questions
What is the hypotenuse of a triangle with legs 3 and 9?
It is √90 ≈ 9.486833 (or 3√10 in simplified radical form). Using a² + b² = c²: 3² + 9² = 90.
Is 3, 9, … a Pythagorean triple?
No. The hypotenuse √90 is not a whole number, so 3 and 9 do not form a Pythagorean triple with an integer hypotenuse.