How Does the Area of a Figure Change When Dilated

A figure has an area of 50 units² What will the new area be after a dilation with a scale factor of 3?

• 150 units²

• 7,500 units²

• 450 units²

Tags

CCSS.7.G.A.1

Which rule applies to a dilation by a scale factor of 4

• (x, y) ----> (x + 4, y + 4)

• (x, y) ----> (4x, 4y)

• (x, y) ----> (y, -x)

• (x, y) ----> (x, -y)

Tags

CCSS.8.G.A.3

A preschool has a rectangular field and a rectangular playground that are similar in shape. Each dimension of the field is 3 times the corresponding dimension of the playground. Which statement is true?

• The area of the field is 9 times the area of the playground.

• The area of the field is 3 times the area of the playground.

Tags

CCSS.7.G.A.1

An architect was hired to construct a den in the shape of a square. If the client wanted to double the length of each side of the square, how would the new area of the room compare with the area of the original room?

• The areas would be exactly the same.

• The new area would be twice the original area.

• The new area would be four times the original area.

• The new area would be eight times the original area.

Tags

CCSS.7.G.A.1

• F

• G

• H

• J

Tags

CCSS.8.G.A.3

What is the scale factor used to dilate the small square to the larger square given there areas?

• 4

• 16

• 3

• 12

Tags

CCSS.7.G.A.1

Graph the triangle J (2, 2), K (10, 2), L (6, 8). Then dilate by a scale factor of 1/2.

Tags

CCSS.8.G.A.3

Choose the correct scale factor:

• 2

• 3

• 1/3

• 1/2

Tags

CCSS.HSG.CO.A.2

In a dilation what mathematical operation is used with the scale factor?

• addition 

• subtraction 

• multiplication 

• division 

Tags

CCSS.8.G.A.3

Figure ABCD has an area of 4 units². It is then dilated using a scale factor of 4. What is the perimeter of the new figure?

• 32

• 64

• 8

Tags

CCSS.7.G.A.1