Area and Scale Factor Concepts

Area and Scale Factor Concepts

Assessment

Interactive Video

Mathematics

7th - 8th Grade

Practice Problem

Hard

Created by

Thomas White

FREE Resource

This video tutorial covers seventh-grade lesson 15, module four, focusing on solving area problems using scale drawings. The lesson involves peer activities and provides a comprehensive understanding of calculating areas and scale factors for squares, circles, and rectangles. The tutorial explains how to convert scale factors into fractions and percentages, and concludes with examples and a summary of key concepts.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the area of a square with side lengths of 3 units?

15 square units

12 square units

9 square units

6 square units

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a square's side length is tripled, what is the scale factor of the area?

12

9

6

3

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the formula for the area of a circle?

2πr

πr

2πr²

πr²

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the radius of a circle is doubled, what happens to the area?

It doubles

It triples

It quadruples

It remains the same

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the scale factor if a rectangle's length is halved?

2

1/4

1/2

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you express a scale factor of 1/2 as a percentage?

75%

100%

50%

25%

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of the area does a smaller circle represent if its radius is half that of a larger circle?

50%

75%

25%

10%

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