SOLUTION: the perimeter of triangle 180cm. the lenght of the first side is twice lenght of second side the lenght of the third side is three times the lenght of second side.

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Question 526225: the perimeter of triangle 180cm. the lenght of the first side is twice lenght of second side the lenght of the third side is three times the lenght of second side.
Answer by Maths68(1474) About Me  (Show Source):
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Let
Length of second side = a = x
Length of first side = b = 2x
Length of third side = c = 3x
Given
Perimeter of Triangle = P = 180cm


a+b+c=P
x+2x+3x=180
6x=180
x=180/6
x=30

Length of second side = a = x = 30
Length of first side = b = 2x = 2(30) = 60
Length of third side = c = 3x = 3(30) = 90