Use plasticine to make a cylindrical school tool. The diameter of the bottom of the cylinder is 6 cm and the height is 8 cm. If you make a cuboid paper box (6 sides) so that the plasticine cylinder can fit in it, how many square meters will you need at least? Centimeter cardboard?
用橡皮泥做一个圆柱形学具，作出的圆柱底面直径是6厘米，高是8厘米，如果再做一个长方体纸盒(6个面)，使橡皮泥圆柱正好能装进去，至少需要多少平方厘米硬纸？
<gadget id="calculator">6 * 6 * 2</gadget>
<output>72</output>

<gadget id="calculator">6 * 8 * 4</gadget>
<output>192</output>

<gadget id="calculator">72 + 192</gadget>
<output>264</output>

<result>264</result>