Question

THE LENGTH OF ONE SIDE OF A TRIANGLE IS 6 CM. THE SECOND SIDE TWICE THE THIRD SIDE. IF THE PERIMETER OF THE TRIANGLE IS 18 CM. FIND THE SIDE OF THE TRIANGLE.

Answer 1

12 +x+2x=18
3x=6
x=2

2,4,12

Answer 2

Let the third side is x,
then second side is 2x
We know that perimeter of a triangle is,
P=A+B+C
18=6+X+2x
18= 3x+6
18-6=3x
12=3x
x=12/3
x=4
2x= 2*4
=8

4,8,6


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