Surface Area And Its Calculations


The surface area is the total area that is covered by the surface of an object. In construction, it is referred to as the floor area of a room or place. In match calculations, the surface area often comes up. There are formulas to calculate the surface area of various shapes and objects. There are many 3D shapes that come up in math and their surface area is required.

Surface Area of 3D Shapes

There are a few shapes in which it is quite evident that there is a separate base and other sides. For such shapes, surface is split into lateral surface area and base area. In most instances they are connoted as LS and BS. The base area is the surface area at the bottom of the shape. The lateral surface area ids the surface area of all the sides that are in the shape. The shapes that have to be calculated in this way are pyramid, prism, cylinder or cone. These shapes have an obvious distinction between the abs and the lateral sides. Other shapes such as the cube or box are usually just solved using the basic formula. This is because in this shapes, the base and the sides of the figure are not obvious and thus errors could occur in calculation. In the case of these shapes, separate formulas are used.

The Formulas Used to Calculate Surface Area of Various Figures

The shapes in which the base and the lateral sides are obvious are calculated using different formulas. Like the cylinder’s surface area is calculated using “A = 2πr² + 2πrh”. This is because a cylinder has two bases and hollow sides. There cube is the simples shape and to calculate its area, all the side are just added up.

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