If a cylinder with a height of 10 decimeters is cut into two parts along the diameter of its base, the surface area increases by 48 decimeters2, what is the radius of the base of this cylinder in decimeters?
把一个高10分米的圆柱体，沿着它的底面直径切成两个部分，表面积增加48平方分米，这个圆柱体的底面半径是多少分米．
<gadget id="calculator">48 / 2 / 10 / 2</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>