A cuboid has a length of 10 cm and a width of 6 cm. Cut out the largest triangle out of this rectangle of cardboard. What is the area of this triangle in square centimetres.
一个长方体纸板的长是10厘米，宽是6厘米．用这个长方形纸板剪一个最大的三角形．这个三角形的面积是多少平方厘米．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<result>30</result>