# If one square mile is 640 acres, how many square meters are there in 1 acre?

## Question:

If one square mile is 640 acres, how many square meters are there in 1 acre?

## Unit Conversion

In mathematics and science, unit analysis involves changing a unit of measurement from one unit into another unit by multiplying it by a known proportion. For example, to change kilometers into meters, we multiply the number of kilometers by {eq}1000 {/eq}.

## Answer and Explanation:

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Chapter 1 / Lesson 2Dimensional analysis is used in converting different units of measure through the multiplication of a given proportion or conversion factor. Learn how to solve single-step and multi-step problems using dimensional analysis and understand the cancellation of units in a numerator and denominator.