Given that the park is a rectangle and has 4 sides side a = 3.00565 side b= 7.05475 i got this by using this equation: 2 (x+4.0491) + x = 20.1208 to solve first divide each side by 2 (x+4.0491) + x = 10.0604 then combine x's 2x+4.0491=10.0604 then subtract 4.0491 on each side 2x= 6.0113 then divide each side by 2 ×= 3.00565 that gives you side A to find side B take side a + 4.0491 3.00565 + 4.0491 = 7.05475 and that is side B