The length of one side of the triangle is 4.5 decimeters, the height of this side is 8.6 decimeters; the length of the other side is 3 decimeters, what is the height of this side.
三角形一条边长是4.5分米，这条边上的高是8.6分米；另一条边长是3分米，则这条边上的高是多少．
<gadget id="calculator">8.6 / 2</gadget>
<output>4.3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4.5 * 4.3 * (2/3)</gadget>
<output>12.9</output>

<result>12.9</result>