Scale Factor from Perimeter to Area

A square is dilated by a scale factor of 4.3. Which statement is true?

• The perimeter of the new square will be 18.49 times the perimeter of the old square.

• The perimeter of the new square will be 3 times the perimeter of the old square.

• The area of the new square will be 4.3 times the area of the old square.

• The area of the new square will be 18.49 times the area of the old square.

Tags

CCSS.7.G.A.1

If the linear scale factor is 4, what is the area scale factor?

• 2

• 8

• 16

• 25

Tags

CCSS.7.G.A.1

If the linear scale factor is 6, what is the area scale factor?

• 12

• 6

• 36

• 18

Tags

CCSS.7.G.A.1

A figure is multiplied by the scale factor 1/4. What will be the change in area?

• The area will be 1/4 the original area.

• The area will be 1/8 the original area.

• The area will be 1/16 the original area.

Tags

CCSS.7.G.A.1

A figure is dilated by a scale factor of 7. How will the area of the figure be effected?

• It will be 7 times bigger.

• It will be 49 times bigger.

• It will be 7 times smaller.

• It will be 49 times smaller.

Tags

CCSS.7.G.A.1

Which proportion must be true?

• F

• G

• H

• J

Tags

CCSS.HSG.SRT.A.2

A triangle is dilated by a scale factor of 2. If the original perimeter was 24, what will be the new area?

• 24

• 2

• 12

• 48

Tags

CCSS.7.G.A.1

If a shape is dilated, how do you find the new area?

• You multiply the old area by the scale factor used in the dilation.

• You square the scale factor used in the dilation. Then multiply the old area by the squared scale factor.

Tags

CCSS.7.G.A.1

• 0.25
• 0.5
• 2
• 1/2

Tags

CCSS.7.G.A.1

If I know the Area of the smaller rectangle is 12. How do I know the Area of the larger rectangle without knowing all side lengths.

• Multiply smaller Area by SF

• Divide smaller Area by SF

• Multiply smaller Area by SFxSF

• Multiply smaller Area by SFx2

Tags

CCSS.7.G.A.1