Find the lateral area of the cylinder: the radius of the base is 2 decimeters, and the height is 7.3 decimeters.
求圆柱的侧面积：底面半径是2分米，高是7.3分米．
<gadget id="calculator">2 * 3.14 * 2 * 7.3</gadget>
<output>91.688</output>

<result>91.688</result>