There is a cylindrical cistern with a base radius of 1 meter and a depth of 2 meters. Put cement on the bottom of the pool and its surroundings. If 25 kilograms of cement is used per square meter, how many kilograms of cement will be used in total?
有一个圆柱形蓄水池，底面半径是1米，深是2米．在池底和周围抹上水泥，如果每平方米用水泥25千克，一共要用水泥多少千克？
<gadget id="calculator">2 * 3.14 * 1 * 2</gadget>
<output>12.56</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">12.56 + 3.14</gadget>
<output>15.7</output>

<gadget id="calculator">25 * 15.7</gadget>
<output>392.5</output>

<result>392.5</result>