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Scale Drawings and Models - Understanding Ratios for Accurate Representations

Learn how scale drawings and models help represent objects too large or small for actual size. Calculate scales and scale factors for accurate measurements. Practice problems included.

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Scale Drawings and Models - Understanding Ratios for Accurate Representations

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  1. Lesson 4-6 Scale Drawings and Models

  2. Definitions • Scale Drawing or Scale Model- is used to represent an object too large or too small to be drawn or built at actual size. • Scale- is determined by the ratio of a given length on a drawing or model to its corresponding actual length.

  3. The distance from Bingston to Alanton is 1.5 inches on a map. Find the actual distance if the scale on the map is 1 inch = 5 miles. • Find the scale factor for the map.

  4. A wall in a room is 15 feet long. On a scale drawing it is shown as 6 inches. What is the scale of the drawing?

  5. At 555 feet tall, the Washington Monument is the highest all-masonry tower. A scale model of the monument is 9.25 inches high. • What is the model’s scale? • What is the scale factor?

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