# 6.5 - Surface Area

```Mr. Orlando’s MPM1D
Lesson 6.4 – Surface Area of a Prism
December 3, 2018
Lesson 6.5 – Surface Area of a Prism or Cylinder
Surface Area
Surface area is the measure of the amount of square area required to cover the entire surface of a 3
dimensional object.
Recall that prisms have 2 identical faces, and rectangular side panels, equal in number to the
number of sides on the face polygons.
So a triangular prims has 2 identical triangle faces, and three rectangular sides.
Finding the Surface Area
To find the surface area, you must determine the area of EACH SIDE/FACE of the object, and sum
them together.
Mr. Orlando’s MPM1D
Lesson 6.4 – Surface Area of a Prism
Example 1: Surface Area of a rectangular prism
Now you try a couple!
December 3, 2018
Mr. Orlando’s MPM1D
Lesson 6.4 – Surface Area of a Prism
Example 2: Surface Area of a Triangular prism
The same principle applies to Triangular prisms.
Now you try!
December 3, 2018
Mr. Orlando’s MPM1D
Lesson 6.4 – Surface Area of a Prism
Example 3: Volume of a Cylinder
The same principle applies to a cylinder as well!
Now you try!
December 3, 2018
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