If a cylinder with a diameter of 10dm and a height of 10dm is cut into two parts along its diameter, the sum of the surface areas of the two parts is increased by dm**2 compared with the surface area of the original straight cylinder.
把一个直径是10dm，高是10dm的圆柱体，沿着它的直径切成两部分，这两部分表面积的和比原来直圆柱的表面积增加了多少dm**2．
<gadget id="calculator">10 * 10 * 2</gadget>
<output>200</output>

<result>200</result>