Unit 5 Review Problems

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

• Circle
• Triangle
• Rectangle
• Ellipse

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

• Dome
• Circle
• Pyramid
• Triangle

Describe the cross section.

• triangle
• rectangle
• oval
• trapezoid

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

• Dome
• Circle
• Ellipse
• Rectangle

When scaling area, you will use...

• k

• k²

• k³

• It depends on the problem

The surface area of the prism was originally 100 sq inches, but it was dilated with a k=.5. What is the new surface area?

• 100

• 50

• 25

• 12.5

When scaling volume, you will use...

• k

• k²

• k³

• It depends on the problem

The volume of the pyramid was originally 100 liters, but it was dilated with a k=3. What is the new volume?

• 2700 liters

• 900 liters

• 300 liters

• 100 liters

The original cup has 48oz. The mini-cup has 6oz. What was the original scale factor from original to mini-cup?

• 6

• 8

• .166

• .5

Find the radius of a cylinder that is 20 inches tall and has a volume of 19242.24 cubic inches. 

• 16
• 16.5
• 17.2
• 17.5