Question 951373
 A flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 28 feet more feet than the length of the shortest side. Find the dimensions if the perimeter is 144 feet.
s=shortest side; 2s=one side; (s+28ft)=third side
Perimeter=s+(2s)+(s+28ft)
Perimeter=4s+28 ft subtract 28 ft from each side.
Perimeter-28ft=4s Divide each side by 4.
(Perimeter-28ft)/4=s 
(144ft-28ft)/4=s
116ft/4=s
29ft=s ANSWER 1: The shortest side is 29 feet.
2(29ft)=58ft ANSWER 2: One side is 58 feet.
s+28ft=29ft+28ft=57ft ANSWER 3: The third side is 57 feet.
CHECK:
Perimeter=144ft
144ft=29ft+58ft+57ft
144ft=144ft