The radius of a piece of a wire circular in shape is 21 cm . It is rebent into the shape of a rectangle whose length is 40 cm. Find the breadth of the rectangle.
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Therefore breadth of the given rectangle is 26 cm............
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circumference of a circle is equal to perimeter of rectangle so
2πr=2(length +breadth)
2×22/7×21= 2(40+b)
= 26cm is breadth
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