A cylinder and a cone are both 10 centimeters high, and the base area of the cone is 60 square centimeters. When the base area of the cylinder is how many square centimeters, their volumes are equal.
一个圆柱和一个圆锥高都是10厘米，圆锥的底面积是60平方厘米，当圆柱的底面积是多少平方厘米时，它们的体积相等．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 60 * 10</gadget>
<output>200</output>

<gadget id="calculator">200 / 10</gadget>
<output>20</output>

<result>20</result>