A cone has a volume of 15.5 cubic meters and a height of 6 meters. What is the area of its base in square meters?
一个圆锥体的体积是15.5立方米，高是6米，它的底面积是多少平方米．
<gadget id="calculator">3 / 6</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">15.5 * (1/2)</gadget>
<output>7.75</output>

<result>7.75</result>