Homework Help: geometry

Posted by Anonymous on Tuesday, February 15, 2011 at 2:20pm.

in a triangle the middle length side is 3 more than the shortest side, and the longest side is double the middle lenght side the perimeter of the triangle is 45cm find the lenghts of the side

geometry - anonymous, Tuesday, February 15, 2011 at 4:26pm
u do the math
geometry - Henry, Thursday, February 17, 2011 at 4:19pm
Shortest side = X cm.
Middle side = (X + 3)cm.
Longest side = 2(x + 3) = (2X + 6)cm.

X + (X + 3) + (2X + 6) = 45cm,
4X + 9 = 45,
4X = 45 - 9 = 36,

X = 9cm = Shortest side.
X + 3=9 + 3 = 12cm=Middle length side.
2X + 6 = 18 + 6 = 24cm = Longest side.

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