The base radii of the cylinder and the cone are equal, the height of the cylinder is 1/2 of the height of the cone, and the volume of the cylinder is equal to that of the cone.
圆柱和圆锥的底面半径相等，圆柱的高是圆锥高的(1/2)，圆柱体积是圆锥的多少．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>