The height and volume of a cylinder and a cone are equal respectively. It is known that the base area of the cylinder is 13.5 square centimeters. What is the base area of the cone in square centimeters.
一个圆柱和一个圆锥的高和体积分别相等，已知圆柱的底面积是13.5平方厘米，圆锥的底面积是多少平方厘米．
<gadget id="calculator">13.5 * 3</gadget>
<output>40.5</output>

<result>40.5</result>