Geometry | Unit 5 | Lesson 5: Scaling and Unscaling | Practice Problems

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A trapezoid has an area of 100 square units. What scale factor would be required to dilate the trapezoid to have each area?

• 6400 square units

• 900 square units

• 100 square units

• 25 square units

A trapezoid has an area of 100 square units. What scale factor would be required to dilate the trapezoid to have each area?

• 6400 square units

• 900 square units

• 100 square units

• 25 square units

• 4 square units

A triangle has an area of 6 square inches and a perimeter of 12 inches. Suppose it is dilated by some scale factor, and the area and perimeter of the image are calculated. Match each graph with the relationship it represents.

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Select all solids whose cross sections are dilations of some two-dimensional shape using a point directly above the shape as a center and scale factors ranging from 0 to 1.

• cylinder

• cube

• triangular prism

• cone

• triangular pyramid