Answer
True.
Work Step by Step
Surface area may be defined as the total outer surface area of a solid figure which is three-dimensional in nature. The surface area of a three-dimensional object is measured in terms of square units. For instance, the area of rectangle solid can be computed by adding all the six outside rectangles of the object.
In this way, the formula for surface area of rectangular solid would be as follows:
\[\text{Surface area}=2\left( lw+wh+lh \right)\]
In the above formula, l represents length, w represents the width and h represents height.
Hence, the given statement is true.
