Who wrote lives of the most excellent italian architects, painters, and sculptors, the main publication from which art historians trace the beginnings of the discipline? giorgio vasari pliny the elder johann joachim winckelmann parrhasios?

hi     (had to add 20 words)                                                                  

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