An exhaust pipe is shaped like a cylinder with a height of 50 inches and a radius of 2 inches. What is the lateral surface area of the exhaust pipe?

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Presentation transcript:

An exhaust pipe is shaped like a cylinder with a height of 50 inches and a radius of 2 inches. What is the lateral surface area of the exhaust pipe? Round your answer to the nearest hundredth. Problem of the Day

Section 12-3a Surface Areas of Pyramids

Then Now Objectives You found the areas of regular polygons. Find lateral areas and surface areas of pyramids.

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A regular pyramid has a base that is a regular polygon and the altitude has an endpoint at the center of the base. All the lateral edges are congruent and all the lateral faces are congruent isosceles triangles. The height of each lateral face is called the slant height l of the pyramid. Vocabulary

Find the lateral area and surface area of each regular pyramid Find the lateral area and surface area of each regular pyramid. Round to the nearest tenth. Example 1 and 2

Find the lateral area and surface area of each regular pyramid Find the lateral area and surface area of each regular pyramid. Round to the nearest tenth. Example 1 and 2

Find the surface area of each regular pyramid Find the surface area of each regular pyramid. Round to the nearest tenth. Example 3

p.859 #1, 7, 8, 11, 34, 46 Homework