cube with an edge length of 3 decimeters has a volume ratio of 3:5 to the volume of another cone. It is known that the height of this cone is 5 decimeters. What is the area of its base in square decimeters?
一个棱长3分米的正方体，它的体积与另一个圆锥体体积的比是3：5，已知这个圆锥体的高是5分米，它的底面积是多少平方分米？
<gadget id="calculator">3 / 3</gadget>
<output>1</output>

<gadget id="calculator">5 / 5</gadget>
<output>1</output>

<gadget id="calculator">3 * 3 * 3 * 1 * 1</gadget>
<output>27</output>

<result>27</result>