Section 12-2: Surface Areas of Prisms and Cylinders
By the end of this lesson, you should be able to answer:
• How do you find lateral areas and surface areas of prisms?
• How do you find lateral areas and surface areas of cylinders?
Vocabulary:
Lateral Face
Lateral Edge
Base Edge
Altitude
Height of a
Prism/Cylinder
Lateral Area of a Prism:
Example 1: Find the lateral area of the regular hexagonal prism.
Surface Area of a Prism:
Example 2: Find the surface area of the rectangular prism.
Lateral Area
Axis
Lateral Area of a Cylinder:
Surface Area of a Cylinder:
Example 3: Find the lateral area and the surface area of the cylinder. Round to the
nearest hundredth.
Problem Set:
“No act of kindness, no matter how small, is ever wasted.” - Aesop