How to solve map scale examples, such as line ratio 1 inch = 10 km
Answers
Answer:
by ratio and proportion or unitary method
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Step-by-step explanation:
Words & Numbers Map Scale:
A ratio or representative fraction (RF) indicates how many units on Earth's surface are equal to one unit on the map. It can be expressed as 1/100,000 or 1:100,000. In this example, 1 centimeter on the map could equal 100,000 centimeters (1 kilometer) on Earth. It could also mean that 1 inch on the map is equal to 100,000 inches on the real location (8,333 feet, 4 inches, or about 1.6 miles). Other common RFs include 1:63,360 (1 inch to 1 mile) and 1:1,000,000 (1 cm to 10 km).
To find a real-life distance, measure the distance between two points on the map, whether inches or centimeters—whichever scale is listed—and then do the math. If 1 inch on the map equals 1 mile and the points you're measuring are 6 inches apart, they're 6 miles apart in reality.
Caution:
The first two methods of indicating map distance would be ineffective if the map is reproduced by a method such as photocopying with the size of the map modified (zoomed in or reduced). If this occurs and one attempts to measure 1 inch on the modified map, it's not the same as 1 inch on the original map.
Large or Small Scale:
Maps are often known as large scale or small scale. A large-scale map refers to one that shows greater detail because the representative fraction (e.g., 1/25,000) is a larger fraction than a small-scale map, which would have an RF of 1/250,000 to 1/7,500,000. Large-scale maps will have an RF of 1:50,000 or greater (i.e., 1:10,000). Those between 1:50,000 to 1:250,000 are maps with an intermediate scale. Maps of the world that fit on two 8 1/2-by-11-inch pages are very small scale, about 1 to 100 million.