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QUESTION
Q
A copper wire is bent in the shape of a square of area 81 cm2. If the same wire is bent in the form of a semicircle,...

Solution

Let the side of the square = a cm Given area of square = 81  cm2 ⇒ a2 = 81  ⇒ a = 9 cm Length of the wire = perimeter of square = 4a = 4 × 9 =...

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