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Perimeter and Area with Scale Factors

Authored by Anthony Clark

Mathematics

7th Grade

CCSS covered

Used 1+ times

Perimeter and Area with Scale Factors
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14 questions

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1.

MULTIPLE SELECT QUESTION

1 min • 1 pt

A triangle has an area of 6 square inches and a perimeter of 12 inches. Suppose it is dilated by some scale factor, and the area and perimeter of the image are calculated. Match each graph with the relationship it represents.

Media Image
Media Image
Media Image
Media Image

Tags

CCSS.7.G.A.1

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Tags

CCSS.7.G.A.1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If two similar figures have a perimeter ratio of 4:5, then what is the ratio of the area?

4:5

8:10

16:25

16:10

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If two similar figures have a perimeter ratio of 4:5, then what is the scale factor?

4:5

16:25

8:10

2:2.5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If two similar figures have an area ratio of 100:81, then what is their perimeter ratio?

100:81

10:9

50:40.5

5:9

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What do you have to do to the perimeter ratio or scale factor to get the area ratio?

divide by 2

square the ratio

square root the ratio

nothing, it is the same value

Tags

CCSS.7.G.A.1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

True or false? Perimeter ratios and scale factors have the same value.

true

false

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