三平方の定理の計算機
直角三角形の 2 辺から、残りの 1 辺を求めます。
結果
値を入力して「計算」を押すと結果が表示されます。
公式
In a right triangle, the square of the hypotenuse equals the sum of the squares of the legs.
この計算ツールの使い方
- Choose what to find, enter the two known sides and press Calculate.
- The hypotenuse is the longest side, opposite the right angle.
解き方付き例題
Legs 3 and 4
c² = 3² + 4² = 9 + 16 = 25.
c = √25 = 5.
よくある質問
Why might I get a square root in the answer?
Most side lengths are irrational, like √2. Sumzo keeps them exact and shows the decimal too.
Does it work for any triangle?
No — only right triangles (one 90° angle).