a **prism** is a three – dimensional object that has a uniform polygon cross section.

eg: cube, rectangular prism or cuboid, triangular prism or wedge, trapezoidal prism

the **total surface area** ( TSA ) of a solid is the combined area of all external surfaces.

**total surface area of a rectangular prism**

TSA = 2 ( R1 + R2 + R3 )

where R1 is the area of the front face, R2 is the area of the side face and R3 is the area of the side face of the rectangular prism

**total surface area of a triangular prism**

TSA = 2 ( T ) + [ (R1 + R2 + R3) ]

where T is the area of the triangular face and R1,R2 and R3 are the areas of the rectangular or square faces

**total surface area of a trapezoidal prism**

TSA = 2 ( TR ) + [ (R1 + R2 + R3) ]

where TR is the area of the trapezoid face and R1,R2 and R3 are the areas of the rectangular or square faces

_____________________________________________________________

### Like this:

Like Loading...

*Related*