The lengths of the three sides of a right triangle are 5cm, 3cm and 4cm respectively, what is the height of the hypotenuse in cm?
一个直角三角形三条边的长度分别是5cm，3cm和4cm，斜边上的高是多少cm．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 * 2 * (2/5)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>