Question

What is the length of the squared shoulder with a wire made of a radius of 25 cm radius and made a square line with the same wire?

Answer 1

key point - "circumference of circle is equal to perimeter of square"

circumference = 2πr

=2π(25) =50π

so perimeter of square = 50 π

let the length of a side of square be 'a'.

square has four equal sides so

a +a + a+ a = 4a = 50π

a = 25π/2

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