If the side length of a cube is 70 cm, what is its surface area in square decimeters?
一个正方体的棱长是70厘米，它的表面积是多少平方分米．
<gadget id="calculator">70 / 10</gadget>
<output>7</output>

<gadget id="calculator">6 * 7 * 7</gadget>
<output>294</output>

<result>294</result>