The height of the cone and the radius of the base are both equal to the side length of a cube. The volume of the cube is known to be 90 cubic centimeters. Do you know what the volume of the cone is?
圆锥体的高和底面半径都等于一个正方体的棱长．已知正方体的体积是90立方厘米．你知道圆锥体的体积是多少吗？
<gadget id="calculator">90 / 3</gadget>
<output>30</output>

<gadget id="calculator">3.14 * 30</gadget>
<output>94.2</output>

<result>94.2</result>