cylindrical wooden block with base radius α and height h is cut into a largest cuboid. Then cut off the original number (π takes 3).
一个底面半径为α，高为h的圆柱体木块，削成一个最大的长方体．则削去了原来的多少(π取3)．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>