Construct a triangle PQR, whose perimeter is 14 cm and whose sides are in the ratio 2:4:5
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let side be 2x:3x:5x=total perimeter
2x+3x+5x = 15
10x= 15
x= 15/10
now put the value of x in side
2x=2×15/10
3x= 3×15/10
5x= 5×15/10
2x+3x+5x = 15
10x= 15
x= 15/10
now put the value of x in side
2x=2×15/10
3x= 3×15/10
5x= 5×15/10
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