So the map has a scale of 1 cm: 20 km. Next, you look at how far they are apart and see if the scale and the distance on the map are the same measurement. In this case, they are both centimeters so they stay the same. Then, all you do is multiple the real size, 20 km, by
To find a percentage of a number, you divide by that number. So to find what percent of 150 162 is, you divide 162 by 150 162 ÷ 150 = 1.08 Now, to find the percentage, we take the decimal and move the point two places to the right. 1.08 = 108% 162 is 108% of 150.
