The two sides of a right triangle are 9 cm and 5 cm respectively, and the volume of the resulting figure is in cubic centimeters if one revolution is made around the axis of the side 5 cm long.
一个直角三角形的两条直角边分别是9厘米和5厘米，以5厘米长的直角边为轴旋转一周，所得图形的体积是多少立方厘米．
<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 * 5</gadget>
<output>423.9</output>

<result>423.9</result>