A cylinder has a base diameter of 5 cm and a height of 10 cm, what is its lateral area in square centimeters?
一个圆柱的底面直径是5厘米，高是10厘米，它的侧面积是多少平方厘米．
<gadget id="calculator">3.14 * 5 * 10</gadget>
<output>157</output>

<result>157</result>