Question

does anyone know if this is correct or how to do this? (part a,b, and c)

Answer 1

 Part A you would use 200-L ( since you have 400 feet total 200 feet would equal length plus width)

Part B 200 - 80 = 120

Part C 200-90 = 110

area = 90 x 110 = 9900 square feet