Use a piece of rectangular cardboard with a length of 10 cm and a width of 8 cm to cut out the largest square. What is the area of this square in square centimeters?
用一块长是10厘米，宽是8厘米的长方形厚纸板，剪出一个最大的正方形，这个正方形的面积是多少平方厘米．
<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>