find the breadth of a rectangle if the perimeter with our perimeter is equal to 86 cm and width is equal to 18 cm
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perimeter = 2 × ( l + b )
86 = 2 × ( l + 18 )
86/2 = l + 18
43 - 18 = 25 cm
86 = 2 × ( l + 18 )
86/2 = l + 18
43 - 18 = 25 cm
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