# Surface Area Of A Cuboid

The total surface area (TSA) of a cuboid is the sum of the areas of its 6 faces, which is given by:

*TSA = 2 (lw + wh + hl) *

Remember the surface area is the total area of all the faces of a 3D shape.

The lateral surface area of a cuboid is given by:

*LSA = 2 (lh + wh) = 2 h (l + w)*

## Example :

Find the total surface area of a cuboid with dimensions 8 cm by 6 cm by 5 cm.

*TSA = 2 (lw + wh + hl) *

*TSA = 2 (8*6 + 6*5 + 5*8)*

*TSA = 2 (48 + 30 + 40) *

*TSA = 236 *

So, the total surface area of this cuboid is 236 cm^{2}.