If a 2.60 inch circumference circle is inscribed in a square, what is the square’s perimeter?

Answer 1

The formula for circumference is C = 2•π•r. So solving for r, we get 2.6/(2•π). Therefore the diameter = 2.6/π, which equals the length of 1 side of the square. The perimeter of the square is 10.4/π.