Surface Areas of Prisms and Cylinders LESSON 12–2.

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Presentation transcript:

Surface Areas of Prisms and Cylinders LESSON 12–2

Then/Now You found areas of polygons. Find lateral areas and surface areas of prisms. Find lateral areas and surface areas of cylinders.

Concept

Example 1 Lateral Area of a Prism Find the lateral area of the regular hexagonal prism.

Example 1 Find the lateral area of the regular octagonal prism.

Concept

Example 2 Surface Area of a Prism Find the surface area of the rectangular prism.

Example 2 Find the surface area of the triangular prism.

Concept

Example 3 Lateral Area and Surface Area of a Cylinder Find the lateral area and the surface area of the cylinder. Round to the nearest tenth.

Example 3 Find the lateral area and the surface area of the cylinder. Round to the nearest tenth.

Example 4 Find Missing Dimensions MANUFACTURING A soup can is covered with the label shown. What is the radius of the soup can?

Example 4 Find the diameter of a base of a cylinder if the surface area is 480  square inches and the height is 8 inches.