The surface area of a cylinder is 244.92cm**2, its base radius is 3cm, what is its height?
一个圆柱的表面积是244.92cm**2，已知它的底面半径是3cm，那么它的高是多少？
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 2</gadget>
<output>56.52</output>

<gadget id="calculator">244.92 - 56.52</gadget>
<output>188.4</output>

<gadget id="calculator">2 * 3.14 * 3</gadget>
<output>18.84</output>

<gadget id="calculator">188.4 / 18.84</gadget>
<output>10</output>

<result>10</result>