Changing a Scale — Unit test Answers

Gigi makes a scale drawing of a patio. The drawing below shows the two scales she used to plan two patios of different sizes.Which shows the correct dimensions of the rectangle in both scales?

Michel uses the scale drawing and the scale factor to enlarge a square that has a side length of 12 in.Which proportion could Michel use to solve the side length, x, of the enlarged square?

The scale on a map shows that 2 inches represents 15 miles. Which proportion can be used to find the actual distance, x, represented by 30 inches on the map?

The rectangle below has been reduced by a scale of . [Not drawn to scale]What is the area of the reduced rectangle?

Liliana wants to determine the height of an enlarged photo that she plans to frame. The original photo was 11 inches wide by 14 inches high. The new photo will be 132 inches wide. What will the new height be? Round to the nearest inch if necessary.

The diagram represents the enlargement of a rectangle by using a scale factor of 6. What are the dimensions of the original rectangle?

If a scale factor of is used to make a reduction, what is the base of the original triangle? Original triangleReduced triangleHeight 3Base 5

Evelyn wants to enlarge a photo that measures 3 inches by 5 inches. What is the missing measurement, in inches, that Evelyn needs?

Which is the scale factor proportion for the enlargement shown? Not drawn to scale

The scale factor of a figure and its enlargement is 6. What is the new length of the enlarged figure if the original length is 3 cm?

The starting and stopping point for Amir’s run this morning are 0.5 inch apart on the map. If each inch on the map represents 3 miles, how far did Amir run?

The scale drawing of a rectangular room will be enlarged by a scale factor of 4 to create the actual room. The actual area of the room will be 150 square feet. Which expression finds the area of the scale drawing?

Devon made a scale drawing of a triangle. He used a scale factor of to draw the new triangle. How does each side of the new triangle compare to the original?

Uma makes a scale drawing of a patio. The drawing below shows the two scales she used to plan two patios of different sizes.Which shows the correct lengths of side C in both scales?

Consider the original triangle and the enlargement. Figures not drawn to scale.What is the length of side A in centimeters?

A picture is photocopied by using a scale factor of 2. Each side of the photocopy of the picture is

The distance between the library and the grocery store is 4 centimeters on the map. The actual distance is 12 kilometers. What is the scale of the map?

Sienna planned a rectangular pool, as shown in the scale drawing below.Sienna used the scale drawing above to create a pool that is 14 ft wide 22 ft long. She then decided to make a pool with a final length of 33 ft. Which expression finds the change in scale factor for the longer pool Sienna is building?

The area of the scale model of a playground is 6 square yards. The scale model is enlarged by a scale factor of 3 to create the actual playground. What is the area of the actual playground?

The scale factor of a figure and its enlargement is 4. What is the new length of the enlarged figure if the original length is 4.5 cm?