SOLUTION: Find the perimeter of the triangle, round to the nearest tenth (-3,4),(-1,-2),(3,-1) answer choices are; 19.3 20 18.3 17.9

Algebra ->  Graphs -> SOLUTION: Find the perimeter of the triangle, round to the nearest tenth (-3,4),(-1,-2),(3,-1) answer choices are; 19.3 20 18.3 17.9      Log On


   

Question 451149: Find the perimeter of the triangle, round to the nearest tenth
(-3,4),(-1,-2),(3,-1)
answer choices are;
19.3
20
18.3
17.9
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Find the perimeter of the triangle, round to the nearest tenth

D = sqrt+%28%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2%29%29

(-3,4),

(-1,-2) L[1]) = sqrt%28+%28-2%29%5E2+%2B+6%5E2%29=+sqrt%2840%29 

(3,-1)  L[2] = sqrt%28%28-4%29%5E2+%2B+%28-1%29%5E2%29+=+sqrt%2817%29

(-3,4)  L[3] = sqrt%28+6%5E2+%2B+%28-5%29%5E2%29+=+sqrt%2861%29

 L[1] + L[2] + L[3] = 18.3 (nearest tenth)