Use plasticine to make a cylindrical school tool. The diameter of the bottom surface is 14 cm, and the height is 16 cm. If you make a cuboid paper box so that the cylinder can just fit in, how many square decimeters are needed to make this paper box?
用橡皮泥做一个圆柱体学具，底面直径是14厘米，高是16厘米，如果再做一个长方体纸盒，使圆柱体正好能装进去，做这个纸盒至少需要多少平方分米？
<gadget id="calculator">14 * 16 * 4</gadget>
<output>896</output>

<gadget id="calculator">14 * 14 * 2</gadget>
<output>392</output>

<gadget id="calculator">896 + 392</gadget>
<output>1_288</output>

<result>1_288</result>