A piece of wire in the form of a circle has a radius of 28 cm. It is reshaped into a rectangle of length 50 cm. Calculate the width of the rectangle.
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Answer:
Radius of circle, r=28cm
then the circumference = 2πr
=2×722×28
=176cm
Let a be the side of the square,
circumference of circle = perimeter of the square
176=4a
a=4176=44cm
area of square = a2
=442
=1936cm2
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