A building has 4 large cylinders to be painted. The circumference of the bottom of the cylinders is 2.5 meters and the height is 5.2 meters. Calculated on the basis that 1 kg can paint 5 square meters, how many kilograms of paint are needed in total?
某建筑物有4根大圆柱要油漆，圆柱底面周长2.5米，高5.2米．按1千克可漆5平方米计算，一共需要多少千克油漆？
<gadget id="calculator">2.5 * 5.2 * 4</gadget>
<output>52</output>

<gadget id="calculator">52 / 5</gadget>
<output>52/5 = around 10.4</output>

<result>52/5 = around 10.4</result>