The lengths of the two sides of a right triangle are 3 and 4 respectively, find the volume of the three-dimensional figure formed by rotating the hypotenuse as the axis. (π takes 3)
一个直角三角形的两条直角边长分别是3和4，求以斜边为轴旋转形成的立体图形的体积．(π取3)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 * (4/5)</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">(12/5) ** 2</gadget>
<output>144/25 = around 5.76</output>

<gadget id="calculator">(1/3) * 3 * (144/25) * 5</gadget>
<output>144/5 = around 28.8</output>

<result>144/5 = around 28.8</result>