The document outlines lesson 19 which covers computing actual areas from scale drawings. It includes homework assignments, an upcoming quiz, and examples of using scale factors to find the actual areas of figures from scale drawings. Students are asked to check if their actual area calculations match the example results and describe how scale drawings can be used to find real-world object areas.

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Module 1, Lesson 19 10/15/13
HW: Lesson 19 Problem Set #1 and 4
Computing Actual Areas
from a Scale Drawing.
Do Now: Lesson 18 Exit Ticket
QUIZ 2 Friday, and
CRS 4 due tomorrow

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Use the diagrams below to find the scale factor and then find
the area of each figure.
Example 1:

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Use the diagrams below to find the scale factor and then find
the area of each figure.
Example 2:

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Use the diagrams below to find the scale factor and then find
the area of each figure.
Example 3:

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Does the actual area you found reflect the results we found from
Examples 1–3? Explain how you know.

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Closing:
1.) When given a scale drawing, how do we go about finding
the area of the actual object?
2.) Describe a situation where you might need to know the
area of an object given a scale drawing or scale model.

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