The cylinder and the cone have the same base and height, and the total volume is 24.8cm**3. What is the difference between their volumes?
圆柱和圆锥等底等高，体积共24.8cm**3，它们体积相差多少．
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">24.8 / 4</gadget>
<output>6.2</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">6.2 * 2</gadget>
<output>12.4</output>

<result>12.4</result>