Is the the shape?
The square footage of that shape can be found by dividing the lot into two triangles, finding the area of each, then adding up the two areas.
Triangle 1 - right angle triangle sides 78 and 225
Area = height x base / 2 = 225*78/2 = 8,775 ft2
Next we need to find the length of the diagonal line which is the the hypotenuse D of the right angle triangle:
D^2 = 225^2 + 78^2 = 50,625 + 6,084 = 56,709
D = SQRT(50,709) = 238.14 ft
Since we now have the 3 sides, i.e. 125, 213. and 238.14, the area can be found using the triangle area formula:
(Area)² = s(s-a)(s-b)(s-c) where s=(a+b+c)/2
Applying this formula, the area of triangle 2 is 13,269.36 ft2
Therefore total area of plot = 8,775 + 13,269.36 = 22,044.36 square feet.
Hope this helps.
But you posted this as a separate question. Besides the first question you posted was incorrect.
Tom, I just re-checked my answer, and I confirm it is the correct answer. Do you want me to send you the calculation detail?
Thank you for being fair.