The shape of a glass fish tank is a cube, and the side length is 4dm. How many square decimeters of glass are needed to make such a fish tank? (There is a cover on the top of the fish tank)
一个玻璃鱼缸的形状是正方体，棱长是4dm，制作这样一个鱼缸至少需要玻璃多少平方分米？(鱼缸的上面有有盖)
<gadget id="calculator">4 * 4 * 5</gadget>
<output>80</output>

<result>80</result>