“The total areas of six surfaces on cuboid and cube, calling it surface area.
“The total areas of six surfaces on cuboid and cube, calling it surface area.
长方体或者正方体的6个面的总面积，叫做它的表面积。
“The total areas of six surfaces on cuboid and cube, calling it surface area.
长方体或者正方体的6个面的总面积，叫做它的表面积。