Pythagorean Theorem Calculator › Legs 9 and 12
Hypotenuse of 9 and 12
Hypotenuse = 15
For a right triangle with legs 9 and 12, the hypotenuse c satisfies a² + b² = c²:
9² + 12² = 81 + 144 = 225, so c = √225 = 15.
Other triangles with leg 9
9 & 1 · 9 & 2 · 9 & 3 · 9 & 4 · 9 & 5 · 9 & 6 · 9 & 7 · 9 & 8 · 9 & 9 · 9 & 10 · 9 & 11
Frequently asked questions
What is the hypotenuse of a triangle with legs 9 and 12?
It is exactly 15. Using a² + b² = c²: 9² + 12² = 225, and √225 = 15.
Is 9, 12, 15 a Pythagorean triple?
Yes. 9, 12, and 15 are all whole numbers satisfying 9² + 12² = 15², so they form a Pythagorean triple.