The degree ratio of the three interior angles of a triangle is 1:1:2. If the shorter side is 5 cm long, what is the area of the triangle in square centimeters?
一个三角形三个内角的度数比是1：1：2，如果其中较短的边长5厘米，则这个三角形的面积是多少平方厘米．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 * (5/2)</gadget>
<output>25/2 = around 12.5</output>

<result>25/2 = around 12.5</result>