What is the scale factor if a circle's area changes from 8π cm² to 32π cm²?

Scale Factors and Area Relationships

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Thomas White
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
16
8
4
2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a trapezoid's area increases from 100 to 6400 square units, what is the scale factor?
64
32
16
8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the perimeter change when a shape is dilated by a scale factor of 3?
It triples
It doubles
It quadruples
It remains the same
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which graph represents the relationship between scale factor and area?
Graph C
Graph A
Graph B
Graph D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the new area of a polygon with an original area of 10 square units and a scale factor of 4?
40
200
100
160
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many times larger is the area of a dilated parallelogram if the scale factor is 2?
3 times
4 times
2 times
5 times
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which solid has cross-sections that are dilations of a 2D shape?
Cylinder
Cube
Cone
Triangular Prism
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cosine of angle A if the adjacent side is 28 and the hypotenuse is 53?
28/45
45/53
53/28
28/53
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