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Wire in the form of a circle bent into a square or rhombus: find its side

The same question, asked 2 times: CDS 1 2018*, CDS 1 2021. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    CDS 1 2018

    88
    A wire is in the form of a circle of radius 98 cm. A square is formed out of the wire. What is the length of a side of the square ? (Use π=22/7\pi = 22/7)

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  2. Question 2

    CDS 1 2021

    74
    A wire is in the form of a circle of radius 70 cm. If it is bent in the form of a rhombus, then what is its side length? (Take π=227\pi = \frac{22}{7})

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