Scale Factor, Cross Section of Shape

How does scale factor change the area?

• by the scale factor

• by the scale factor squared

• by the scale factor cubed

How does the scale factor change the volume?

• by the scale factor

• by the scale factor squared

• by the scale factor cubed

The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4 what is the new perimeter?

• 120

• 480

• 1920

What shape will the horizontal cross-section of a cone be?

• Dome

• Circle

• Pyramid

• Triangle

In the figure above, a dilation from A to A' has occurred. What is the scale factor?

Mathematical Equivalence

ON

What shape will the vertical cross -section of a cylinder be?

• Circle

• Triangle

• Rectangle

• Ellipse

What shape does this cross section make?

• Rectangle

• Circle

• Triangle

• Square

What shape does this cross section make?

• circle

• Trapezoid

• Rectangle

• Parallelogram

How much grain could fit in this silo? Round your answer to the nearest cubic meter.

• 810 m³

• 733 m³

• 581 m³

• 177 m³

When the dimensions of a figure are changed by a scale factor of 3, what happens to the perimeter?

• The perimeter will be multiplied by 3

• The perimeter will be 3 more than the preimage

• The perimeter will be multiplied by 9

• There is no way to know, we don't have the measurements