If the base of a triangle is 10 cm and its height is twice as high, what is the area of the triangle in square centimeters?
一个三角形底是10厘米，是高的2倍，这个三角形的面积是多少平方厘米．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">10 * (5/2)</gadget>
<output>25</output>

<result>25</result>