E) the diagonal of square a, marked off by the red stars, is where the concession stand is located. a local high school band is performing at the outdoor theater on a summer evening. the band has a school banner that is 40-feet long, and band members would like to hang it across the concession stand to let people know they are performing. estimate the length of the concession stand to determine if the school banner can fit across the length of the concession stand. show your work and explain your reasoning.