The circumference of the base of a cylinder is 18.84dm, and the height is 10dm. If the cylinder is cut into 3 sections, how much does the surface area increase?
一个圆柱的底面周长是18.84dm，高10dm，把这个圆柱截成3段，表面积增加了多少？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 4</gadget>
<output>113.04</output>

<result>113.04</result>