The volume of a cone is 60 cubic centimeters, and its volume is 4 times that of the other cone. If the height of the other cone is 3 cm, what is the area of the base of the other cone?
一个圆锥的体积是60立方厘米，它的体积是另一个圆锥的4倍，如果另一个圆锥的高是3厘米，另一个圆锥的底面积是多少．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

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

<gadget id="calculator">15 * 1</gadget>
<output>15</output>

<result>15</result>