A cylinder has a base radius of 5 cm and a height of 10 cm, what is its surface area in square centimeters?
一个圆柱体的底面半径是5厘米，高10厘米，它的表面积是多少平方厘米？
<gadget id="calculator">2 * 3.14 * 5 * 10</gadget>
<output>314</output>

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

<gadget id="calculator">3.14 * 25 * 2</gadget>
<output>157</output>

<gadget id="calculator">314 + 157</gadget>
<output>471</output>

<result>471</result>