Here's the question you clicked on:
Find tthe area then it is A*cost=A*4
okay. can u work it out step by step? that one was a bit donfusing.
I think easiest way in this case is to treat the whole thing as 6 * 6 square and just subtract the holes 6*6=36 36-(1*3)-(2*2)=29 ^ small piece at the bottom ^ top left square. 29*4=$116
tnx :) lemme write all that down.
I see what you did. a Thank you.