Unit 1:Day 8

 

 

Unit 1: Day 8

 

Daily Objective: Scale factor of sides and scale factor of area

Definition: The ratio of any two corresponding lengths in two similar geometric figures is called as Scale Factor. This is the factor by which all the components of an object are multiplied in order to create a proportional enlargement or reduction.

Pictures: This image below shows how the scale factor of area is shown. Since you have your numbers, now you can make ratios and then cross multiply and divide to find the missing area (?).

 

 

3 question quiz:

 

#1. What is the missing area in this image?

 

 

 

#2. What is the missing length this image below?

 

 

 

#3. What is the missing area in the photo below?

 

 

 

Answer key:

 

#1. After making the ratios from the two figure and cross multiplying and dividing, your answer is 8 inches squared.

 

#2. After making the ratios from the two figure and cross multiplying and dividing, your answer is X = 12.

 

#3. After making the ratios from the two figure and cross multiplying and dividing, your answer is 12 inches squared.