Pythagorean Theorem Calculator › Legs 4 and 8
Hypotenuse of 4 and 8
Hypotenuse = √80 ≈ 8.944272
For a right triangle with legs 4 and 8, the hypotenuse c satisfies a² + b² = c²:
4² + 8² = 16 + 64 = 80, so c = √80 ≈ 8.944272 (4√5).
Other triangles with leg 4
4 & 1 · 4 & 2 · 4 & 3 · 4 & 4 · 4 & 5 · 4 & 6 · 4 & 7 · 4 & 9 · 4 & 10 · 4 & 11 · 4 & 12
Frequently asked questions
What is the hypotenuse of a triangle with legs 4 and 8?
It is √80 ≈ 8.944272 (or 4√5 in simplified radical form). Using a² + b² = c²: 4² + 8² = 80.
Is 4, 8, … a Pythagorean triple?
No. The hypotenuse √80 is not a whole number, so 4 and 8 do not form a Pythagorean triple with an integer hypotenuse.