There are several large cylinders in a building that need to be painted on the sides. The circumference of the bottom of the cylinder is 2.5 meters and the height is 5.2 meters. Five of them have been painted. How many square meters are the painted parts?
某建筑物有几根大圆柱侧面要涂油漆，圆柱的底面周长是2.5米，高5.2米，已经有5根涂了油漆，涂油漆的部分有多少平方米？
<gadget id="calculator">2.5 * 5.2 * 5</gadget>
<output>65</output>

<result>65</result>