Scale Factor and the relationship to area and volume PRE TEST by xnWgjn5

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Scale Factor and the relationship
      to area and volume
           PRE TEST
 Let’s review, what we know about
           similar shapes.

    1.75 cm                x
2.8 cm
                     5.6 cm

    Solve for x
    What is the scale factor?
           Try again

8m
                   x
 6m                 1.5 m

     Solve for x
     What is the scale factor?
               The second
3.5 cm
               quadrilateral
               is half as tall
 5.6 cm
               and half
               as wide.
             This means the
             scale factor is ?.
   1.75 cm
 2.8 cm
If the next shape triples in size,
 what is the area of the larger
 shape.?
 4       6
     5
   2m   Using the formula
6m      for scale factor, what is
        the area of the red
 18m    rectangle?
        If the scale factor is ½
10 cm    what would be the
         area of the smaller?
          5 cm

 10 cm
                       30 cm
The scale factor is 3, because
the size has tripled. What is the
volume of the larger prism?
5m
        30 m              5m
10 m
       What is the scale factor?

     What is the volume of the small?
         Now Check yourself !!
length   width   Scale
                 factor   Answers:

3        5       3

20       40      ½
           Now Check yourself !!
  length   width   height   Scale
                            factor   Answers:

  3        6       2        2

  30       60      20       1/5

Assume all the shapes are cubes

								
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