If the circumference and height of the base of a cone are reduced by 2 times, then the volume is only as much as the original.
如果一个圆锥的底面周长和高都缩小2倍，那么体积只有原来的多少．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>