There is a right triangle whose two sides are 30 cm and 40 cm respectively, and its hypotenuse is 50 cm. How many centimeters is the height on the hypotenuse?
有一个直角三角形的两条直角边分别为30厘米和40厘米，它的斜边是50厘米，斜边上的高度有多少厘米？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">2 / 50</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">30 * 20 * (1/25)</gadget>
<output>24</output>

<result>24</result>