Problems/Right triangle/task.html

<h2>Right triangle</h2>
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  <p>A right triangle is a triangle in which one angle is a right angle (90-degree angle). The side opposite to the right angle is called a <em>hypotenuse </em>and the other two sides are called <em>legs </em>(or <em>catheti</em>). </p> 
  <p>The <em>Pythagorean theorem </em>holds for right triangles with integer lengths of all sides:</p> 
  <p><span class="math-tex">\(c^2 = a^2 + b^2\)</span>, where <span class="math-tex">\(c\)</span> is the length of the hypotenuse, and <span class="math-tex">\(a\)</span> and <span class="math-tex">\(b\)</span> are the lengths of the legs.</p> 
  <p>Here's a class <code class="java">RightTriangle</code> with the class constructor. The constructor is missing the <code class="java">area</code> attribute. Calculate the area <strong>S</strong> according to this formula:</p> 
  <p><span class="math-tex">\(S = \frac{1}{2}ab\)</span>.</p> 
  <p>Three numbers ( <code class="java">input_c</code>, <code class="java">input_a</code>, and <code class="java">input_b</code>) have already been read from the input. They represent a triangle: the first number is the length of the supposed hypotenuse, the other two are the legs. If the triangle with these sides is right, create an instance of the class <code class="java">RightTriangle</code> and print its area (with one decimal). If the triangle is not right, print "<strong>Not right". </strong></p>
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</html><br><b>Sample Input:</b><br><pre><code class="language-no-highlight">5 3 4</code></pre><br><b>Sample Output:</b><br><pre><code class="language-no-highlight">6.0</code></pre><br><br><b>Sample Input:</b><br><pre><code class="language-no-highlight">4 3 2</code></pre><br><b>Sample Output:</b><br><pre><code class="language-no-highlight">Not right</code></pre><br><br><b>Sample Input:</b><br><pre><code class="language-no-highlight">13 12 5</code></pre><br><b>Sample Output:</b><br><pre><code class="language-no-highlight">30.0</code></pre><br><br><br><font color="gray">Memory limit: 256 MB</font><br><font color="gray">Time limit: 15 seconds</font><br><br>
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