SURFACE AREA OF RECTANGULAR AND TRIANGULAR PRISMS
The surface area of a 3 dimensional shape is the total area of all its outside surfaces
A prism is a 3 dimensional shape which has a uniform CROSS SECTION
Now watch this video which explains clearly what a prism is!
|
|
INSTRUCTIONS: Read below!
The surface area of a prism is easily understood if we think of its net. If we unwrap the prism and lay it out flat, the total area of the net gives us the surface area of the prism!
The surface area of a prism is easily understood if we think of its net. If we unwrap the prism and lay it out flat, the total area of the net gives us the surface area of the prism!
2. Read through the example below which shows you that in a rectangular prism there are 6 sides that are actually 3 matching pairs. So for the surface area you calculate the area of a rectangular face and double it.
3. Watch these three videos on calculating the area of rectangular prisms and a triangular prism
This video shows how to calculate the area of a rectangular prism with a net
|
This video explains how to calculate the surface area of a rectangular prism using the formula
|
This video explains how to calculate the surface area of a triangular prism
|