The lengths of the three sides of a right triangle are 15cm, 20cm, and 25cm respectively. What is the height of the hypotenuse?
一个直角三角形三条边长分别是15cm、20cm、25cm，它斜边上的高是多少？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">15 * 10</gadget>
<output>150</output>

<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">150 * (2/25)</gadget>
<output>12</output>

<result>12</result>