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EXAMPLE 4

Maps. Use a metric ruler and the map of Ohio to estimate the distance between Cleveland and Cincinnati. SOLUTION. From the map’s scale, 1 centimeter represents 85 kilometers. On the map, the distance between Cleveland and Cincinnati is about 4.2 centimeters. Use the scale on a map.

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EXAMPLE 4

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  1. Maps Use a metric ruler and the map of Ohio to estimate the distance between Cleveland and Cincinnati. SOLUTION From the map’s scale, 1 centimeter represents 85 kilometers. On the map, the distance between Cleveland and Cincinnati is about 4.2 centimeters. Use the scale on a map EXAMPLE 4

  2. 1 centimeters = 85 kilometers 1 d = 85 4.2 ANSWER 4.2 The actual distance between Cleveland and Cincinnati is about 357 kilometers. d Use the scale on a map EXAMPLE 4 Write and solve a proportion to find the distance d between the cities. Cross products property d = 357 Simplify.

  3. 5. Use a metric ruler and the map in Example 4 to estimate the distance (in kilometers) between Columbus and Cleveland. ANSWER about 212.5 km Use the scale on a map EXAMPLE 4 for Example 4 GUIDED PRACTICE

  4. 6. The ship model kits sold at a hobby store have a scale of 1 ft : 600 ft. A completed model of the Queen Elizabeth II is 1.6 feet long. Estimate the actual length of the Queen Elizabeth II. ANSWER about 960 ft Use the scale on a map EXAMPLE 4 for Example 4 GUIDED PRACTICE Model ships

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