Answer:
80 square yards
Step-by-step explanation:
so you have to divide 20 into 100 to see how much each sheep gets. Each sheep gets 5 square yards. Then you just multiply how much each sheep gets by 5 and get 80 square yards.
You are looking for the perimeter, so you need to add 11+11+7+7. That equals 36.
All is in the file. The graph and formulas.