Find the perimeter of the polygon​

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?