A conical block 8 cm high is sawn vertically from the apex into two equal parts, increasing the surface area by 80 cm2. What is the volume of the conical block?
一个圆锥形木块高8厘米，从顶点垂直锯成相等的两部分，表面积增加80平方厘米，圆锥形木块的体积是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 * (1/4)</gadget>
<output>10</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * 8</gadget>
<output>209.333333</output>

<result>209.333333</result>