Build a cylindrical pool with a perimeter of 25.12 meters and a depth of 2 meters. It is necessary to plaster the bottom and surrounding areas with cement. If 10 kilograms of cement is used per square meter, how many kilograms of cement are needed?
砌一个圆柱形水池，底面周长是25.12米，深2米，要在它的底面和四周抹上水泥，如果每平方米用水泥10千克，共需水泥多少千克？
<gadget id="calculator">25.12 / 3.14 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">25.12 * 2</gadget>
<output>50.24</output>

<gadget id="calculator">50.24 + 50.24</gadget>
<output>100.48</output>

<gadget id="calculator">10 * 100.48</gadget>
<output>1_004.8</output>

<result>1_004.8</result>