length of a rectangular field is 6 times its breadth if the length of the field is 120 cm find question and perimeter of the field
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show the perimeter of the rectangular field is 280 CM square
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given
let
length=120cm
breadth=120-6x
now
perimeter=2(L+B)
=2(120+120-6x)
=140+140-12x
or 12x =280
or x=280÷12
x =23.3
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