Scale Factor to Find Length

If you want to find the scale factor from one figure to another, which formula should you use?

• Copy/Original

• Model/Actual

• Both

In a scale drawing of his room, Colin used each inch to represent 10 feet. What is the scale factor from his drawing to his actual room?

• 10

• 1/10

• 9

• 11

What is the scale factor?

The scale from a map to to real life show that 3 cm is 150 yds. What is the scale factor?

• 750

• 3/150

• 50

• 15/3

Colin's scale factor for his drawing was 10. Colin will need to ​ (a)   the length and the width with the ​ (b)   to find the actual length and width of his room.

• multiply

• scale factor

• divide

• add

• subtract

• height

• base

The scale from the actual coin to the photo is 6mm to 2 cm. What is the actual distance across the coin?

• 8 mm.

• .25 mm

• 9.75 mm

• 11.25 mm

Colin's scale factor is 10. In his drawing, the width of his room is 1.25 in. and the length is 1.5 inches long. What would be the actual length and width of his room?

• 10 feet wide and 15 feet long

• 12.5 feet wide and 15 feet long

• 11.25 feet wide and 12.5 feet long

• 8.75 feet wide and 8.5 feet long

A rectangle that is 2 inches by 3 inches has been scaled by a factor of 7. What are the side lengths of the scaled copy?

• 5 and 10

• 14 and 21

• 5 and 7

• 9 and10

Each inch in the picture represents 8 feet on the actual square shaped flag. What is the area of the actual flag?

From Denver to Chicago = 3 in. If the scale is 1 in = 300 miles, find the actual distance.

• 300 miles

• 1000 miles

• 900 miles

• 600 miles