If the two sides of a right triangle are 10 cm and 9 cm respectively, and the 10 cm long side is rotated around the axis, what is the volume of the resulting figure?
一个直角三角形的两条直角边分别是10厘米和9厘米，以10厘米长的直角边为轴旋转一周，所得到的图形的体积是多少？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9 ** 2</gadget>
<output>81</output>

<gadget id="calculator">(1/3) * 3.14 * 81 * 10</gadget>
<output>847.8</output>

<result>847.8</result>