Question

liana wants to find the perimeter of triangle ABC. She uses the distance formula to determine the length of AB. Finish Iliana’s calculations to find the length of AB.



What is the perimeter of triangle ABC? Round the answer to the nearest tenth, if necessary.

10 units
11 units
12 units
13 units

Answer 1

I don't have the coordinates or Iliana’s partial work — could you paste the coordinates of A, B, and C or upload the diagram (or Iliana’s steps)? Then I can finish the distance calculation and give the perimeter.

Meanwhile, here are the steps I'll follow once you provide the points:

1. If A = (x1,y1) and B = (x2,y2), compute AB = sqrt[(x2 − x1)^2 + (y2 − y1)^2].
2. Do the same for BC and CA.
3. Perimeter = AB + BC + CA. Round to the nearest tenth and compare to the choices (10, 11, 12, 13 units).

If you want, paste Iliana’s AB work and I’ll finish from there.