The height of the cylinder remains the same, the radius of the bottom surface is reduced to the original (1/3), and the volume of the cylinder is reduced to the original amount
圆柱的高不变，底面半径缩小为原来的(1/3)，圆柱的体积缩小为原来的多少
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>