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.the sides of a triangle are in the ratio 3:5:7.if the pereimeter is 60 cms,the longest side is

a.7 b.30 c.28

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option c 28

3x+5x+7x=60
15x=60
x=4
longest side=7*4=28
12 years agoHelpfull: Yes(2) No(0)

assume common multiple to k
hence sides are 3k,5k,7k
perimeter is 15k hence 15k=60
therefore k=4
hence longest side is 7*4=28
12 years agoHelpfull: Yes(0) No(0)

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