A RECTANGULAR FIELD HAS LENGHT X AND BREADTH 3X CM. ITS PERIMETER IS 160 FIND ITS LENGTH
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Perimeter =2(l+b)
l=x
b=3x
perimeter =160 cm.
Substituting values for l and b
2(x+3x)=160
2x+6x=160
8x=160
x=160/8 = 20cm
length = x = 20 cm
breadth = 3x = 3×20=60cm
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