7 2 Scale Drawings Important Terms Scale Drawing

7 -2 Scale Drawings Important Terms: Scale Drawing Scale Factor Scale Drawing: a drawing that is similar to the object it represents. Ex: Map Scale factor or Scale A ratio that compares the relation of the scale model to the actual dimension

I. Identify the scale factor, which is the ratio of, model actual 1. ) Every few year, the Grand Place in Brussels, Belgium, is decorated with a large floral carpet. Suppose the floral carpet is to be 40 meters wide. a designer creates a scale drawing of the carpet that is 20 cm wide. Find the drawing's scale.

Find the scale factor of the following pairs of items. Model Actual Length Item 6 in. 120 in. Tree 10 in. 60 in. Couch 6 in. 84 in. Grizzly Bear Scale Factor

II. Solve the following scale drawing problems using proportions. Calculator permitted, but show all steps. = Proportion setup: scale factor 1. ) On a scale drawing the height of a tree is 6. 5 in. Find the actual height of the tree, if the scale of the model is 1 in to 20 in.

2. ) n a map of Pennsylvania, the distance between Philadelphia and Pittsburgh is 12 in. What is the actual distance if the map scale is 2 in. = 50 miles? 3. ) ary is driving from Philadelphia to Miami for vacation. If the actual distance between the cities is 1, 200 miles, and the map scale is 1 in. = 60 miles, what is the map distance between the cities?

Demonstrate Understanding 1. ) Find the scale factor if an airplane measures 25. 5 feet and the model measures 1. 5 feet. 2. ) r. Patek took a trip to Seattle and bought a miniature version of the Space Needle. If t Space Needle is 600 ft. tall and the scale factor is 1 in : 75 ft. , how tall was the mo 3. ) n a road map, the distance between 2 cities is 2. 5 inches. The map scale is 1 inch = 30 miles. What is the actual distance between the cities?