S slant height. The total surface area is calculated as follows. If you want to know how to find the area of a rectangle just follow these easy steps.
A 2 1350 A 2 1350.
Another way to find the area of a rectangle is to multiply its length by its width. A rectangle is a quadrilateral with two sides of equal length and two sides of equal width that contains four right angles. Lateral and total surface areas can be calculated only for three-dimensional figures. A 2 wl lh hw A 2 w l l h h w.