SOLUTION: A triangle has a perimeter of 72 millimeters. Two of the sides measure 18 millimeters and 24 millimeters. What is the length of the third side?

Algebra ->  Pythagorean-theorem -> SOLUTION: A triangle has a perimeter of 72 millimeters. Two of the sides measure 18 millimeters and 24 millimeters. What is the length of the third side?      Log On


   

Question 1019039: A triangle has a perimeter of 72 millimeters. Two of the sides measure 18 millimeters and 24 millimeters. What is the length of the third side?
Found 2 solutions by Alan3354, fractalier:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
18 + 24 + 3rd side = 72

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Perimeter means the complete distance around a particular shape.
A triangle has three sides.
If you know its perimeter and you know two of the sides, you can subtract the two sides from the perimeter to find the missing side...like this...
72 - 18 - 24 = 30 mm