Math CentralQuandaries & Queries


Question from Phyllis:

Could you please figure out the square footage and acreage of my lot?
One side is 480ft
One side is 410ft
One side is 480ft
The last side is 410ft

Thank you.

Hi Phyllis,

If the corners are right angles then the area is 480 times 410 = 196800 square feet.

square lot

If the corners are not square then you need to find the distance d in feet between a pair of sides as in the diagram below.

skewed lot

In this diagram, since d is the distance between the sides of length 480 ft the area is 480 times d square feet.

One acres is 43560 square feet so once you have the area in square feet divide by 43560 to find the area in acres.


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