prove that (a+b)^-1 (a^-1 + b^ -1 ) = -1/ab
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40 cm²
40 cm²Step-by-step explanation:
40 cm²Step-by-step explanation:We know that perimeter of a rectangle (box) is 2(l+b)
40 cm²Step-by-step explanation:We know that perimeter of a rectangle (box) is 2(l+b)Length of the box = 8cm
40 cm²Step-by-step explanation:We know that perimeter of a rectangle (box) is 2(l+b)Length of the box = 8cmBreadth of the box = 12cm
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