Construct a triangle MNP, whose perimeter is 15 cm and whose sides are in the ratio 2:3:4
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let the side be 2x:3x:4x:= total perimeter
2x+3x+4x=15
9x=15
x=15/9
now put the value of x in the side
2x=2×15/9
3x=3×15/9
4x=4×15/9
2x+3x+4x=15
9x=15
x=15/9
now put the value of x in the side
2x=2×15/9
3x=3×15/9
4x=4×15/9
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