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Unit Conversions

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Date: 4/3/96 at 10:22:18
From: Barbara Noyes
Subject: Conversion Question

How many feet are contained in an acre?  I know a foot is a linear
measurement and an acre is an area so where do I go from here?
```

```
Date: 4/4/96 at 11:13:12
From: Doctor Aaron
Subject: Re: Conversion Question

Hi,

An acre is a unit of area so it doesn't make sense to talk about
how many feet there are in an acre, it only makes sense to talk
about how many square feet or other square units there are in an
acre.

There are 4840 square yards in an acre. You wanted this in feet so
just multiply by 9  to get 43560 square feet (there are 9 square
feet in a square yard).  It may seem strange that this is not a
perfect square, but there is also a unit of length called the
acre-length that is 220 yards.  220 squared is 48400, so an acre
is a plot of land 220 yards by 22 yards.  Then 10 acres side by
side are 220 yards by 220 yards, and an 8 by 8 square of these 10
acre plots is one square mile.

I hope this is helpful.

-Doctor Aaron,  The Math Forum

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Associated Topics:
Elementary Terms & Units of Measurement

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