The two right-angled sides of a right-angled triangle are 3 decimeters and 5 decimeters, and if the two right-angled sides are used as the axis to rotate once, what is the larger cubic decimeter of the two figures formed?
直角三角形的两条直角边为3分米、5分米，分别以这两条直角边为轴旋转一周，形成的两个图形中体积较大的是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 25 * 3</gadget>
<output>78.5</output>

<result>78.5</result>