



 
Hi Phyllis, If the corners are right angles then the area is 480 410 = 196800 square feet.
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.
In this diagram, since d is the distance between the sides of length 480 ft the area is 480 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. Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 