In 524.2, 5 is in the hundreds place, so it stands for 500. In 254.6, 5 is in the tens place, so it stands for 50. You know what place it is in by how far to the left or right it is from the decimal point.
3 can be factored out
3 (x-4)
Answer:
Both figures are rhombuses, they have the same angle degrees, one is just slanted more and smaller than the other.