Effects of Changing Dimensions - Perimeter/Area/SA

If the area of a square is 128 square meters. What would be its area if the dimensions were decreased to $\frac{1}{4}$ their original length? 

• 32

• 8

• 16

• 24

Find the area of the figure after halving the dimensions.

• 9

• 12

• 36

• 18

If this circle is dilated by the scale factor of 2, what would be the new area in cm²?

• 48 cm²
• 24 cm²
• 6 cm²
• 36 cm²

When multiplying by a scale factor the perimeter will multiply by...

• The same scale factor
• The scale factor doubled
• The scale factor squared (to the power of 2)

When multiplying by a scale factor the area will multiply by...

• The same scale factor
• The scale factor doubled
• The scale factor squared (to the power of 2)

A rectangle has a base 4 ft and height of 5 feet. If the figure dilated by a scale factor of 2, what will be true about its perimeter?

• The perimeter is doubled.
• The perimeter is quadrupled.
• The perimeter is two more.
• The perimeter is four more.

A rectangle has a base 4 ft and height of 5 feet. If the figure dilated by a scale factor of 2, what will be true about its area?

• The area is doubled.
• The area is multiplied by 4.
• The area stays the same

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

• The perimeter will be 1/4 the original perimeter.
• The perimeter will be 1/8 the original perimeter.
• The perimeter will be 1/16 the original perimeter

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.

What happens to the circumference of a circle when the radius is doubled?

• It stays the same

• It is doubled

• It is quadrupled

• It becomes a line