Hope I'm not too late, the correct answer is 5.7 on the numberline.
Answer: 24 points
Work Shown:
k = amount of points Katrina scored
k = 8
s = amount of points Sarah scored
s = 3k, since she scored three times as many
s = 3*8
s = 24 points
Add another triangle to make it a square/rectangle. Then find the perimeter of that. Then divide the answer by 2. That will be the perimeter of the shape.
