If the base of a triangle is 3 cm and the height is x cm, what is the area in square centimeters?
一个三角形的底是3厘米，高是x厘米，面积是多少平方厘米．
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>