The surface area of a three-dimensional shape is the sum of all of the surface areas of each of the sides. Roughly speaking, it is the "amount" of a surface (i.e., it is proportional to the amount of paint needed to cover it), and has units of distance squared. Surface area is the total area of the faces and curved surface of a solid figure. surface area meaning: the area of a surface or of all of the outer surfaces of something: . Its total surface area was seven thousand square feet. mathematics. Surface area is commonly denoted for a surface in three dimensions, or for a region of the plane (in which case it is simply called "the" area). Surface area definition is - the amount of area covered by the surface of something. Collins English Dictionary.

The surface area of a solid object is a measure of the total area that the surface of the object occupies. Learn more. These shapes all have the same area of 9: the total area on the surface of a three-dimensional figure. Copyright © HarperCollins Publishers. Surface area is the area of a given surface.

The size of a surface. The total area of the surface of a three-dimensional object. Mathematical description of the surface area is considerably more involved than the definition of arc length or polyhedra the surface area is the sum of the areas of its faces. surface area in British English. Example: the surface area of a cube is the area of all 6 faces added together. The amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle, or surface of a solid (3-dimensional) object. How to use surface area in a sentence. (ˈsɜːfɪs ˈɛərɪə) noun.