An important innovation of ragtime was it was the first African-American music… a. that did not sound identifiable because of its ethnicity
b. to be successfully incorporated into minstrelsy
c. not to be criticized because of its ethnic roots
d. that looked on paper the way it sounded in performance

perimeter = 2l +2w, divide total perimeter by 2 for total length of 1 side and 1 width

172/2 = 86 (  total for 1 side and 1 width)

86-24 = 62 (since length is 24 ft longer subtract 24 then divide by 2 for width)

62/2 = 31

width = 31 feet

length = 31 +24 = 55 feet

check: 31*2 = 62, 55*2 = 110,  110+62 = 172