A cylinder and a cone have the same volume and height. The area of the base of the cone is 30cm**2, what is the area of the base of the cylinder in cm**2?
一个圆柱和一个圆锥体积和高相等．圆锥的底面积是30cm**2，圆柱的底面积是多少cm**2．
<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<result>10</result>