A cuboid of wood, its cross-sectional area is 10 square centimeters, if it is cut into four pieces, how many square centimeters will the surface area increase
一根长方体的木料，它的横截面的面积是10平方厘米，把它截成四段，表面积增加多少平方厘米
<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<result>60</result>