Scale Factor and the relationship to area and volume PRE TEST

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Scale Factor and the relationship to area and volume PRE TEST GLE 0706.2.3 0706.4.3 SPI: 0706.2.7 Scale Factor and the relationship to area and volume PRE TEST

Let’s review, what we know about similar shapes. x 1.75 cm 2.8 cm 5.6 cm Solve for x What is the scale factor?

What is the scale factor? Try again 8 m x 6 m 1.5 m Solve for x What is the scale factor?

The second quadrilateral is half as tall and half as wide. 3.5 cm 5.6 cm 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 4 6 5

Using the formula for scale factor, what is the area of the red rectangle? 2m 6m 18m

If the scale factor is ½ what would be the area of the smaller? 10 cm

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

5 m 5 m 30 m 10 m What is the scale factor? What is the volume of the small?

Now Check yourself !! length width Scale factor 3 5 20 40 ½ Answers:

Now Check yourself !! 3 6 2 30 60 20 1/5 Answers: length width height Scale factor 3 6 2 30 60 20 1/5 Answers: Assume all the shapes are cubes