What is the lateral area of a cylinder with a base radius of 5 cm and a height of 10 cm in cm**2.
底面半径是5厘米，高是10厘米的圆柱体的侧面积是多少cm**2．
<gadget id="calculator">2 * 3.14 * 5 * 10</gadget>
<output>314</output>

<result>314</result>