cylinder, if the height increases by 1cm, the surface area increases by 6.28cm**2. If the cylinder is 10 cm high, what is its volume in cm**3.
一个圆柱体，如果高增加1cm，则表面积增加6.28cm**2．如果该圆柱体高10cm，体积是多少cm**3．
<gadget id="calculator">6.28 / 1 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 10</gadget>
<output>31.4</output>

<result>31.4</result>