The best way to estimate it is to do "written addition" in your head, adding 1+8, then 9+3, all the way until you get to the front. the actual answer is 189,459, so your answer should be somewhere close to that.
H is the answer
and the line of the symmetry is like the picture
If the mug was traced in the center of the paper, she could fold the paper in half vertically and horizontally to find the center point of the mug.
Your answer would be approximately 254.5 if you round since 9^2 times pie you would get such
The best type of mortgage for her would be a fixed rate mortgage, because it would tell her exactly how much she is paying each month