Question

Find the area.

Answer 1

pretend that cutoff edge does not exist and that the rectangle continues naturally, when you have found that area, subtract the area that you put in for the cutoff edge

Answer 2

the area would be 534.5 units squared

Answer 3

nice idea from @shoplevecpc. and TazMann right too
so, the area can be :
23 * 25 - 1/2 * 9 * 9 = 534.5

Answer 4

thanks math is easy for me