What is the correct answer?

4

# A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If r is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be

[r (π + 0.25)]/(π - 0.5)

[r (π - 0.5)]/(π + 0.25)

[r (π - 0.25)]/(π - 0.5)

[r (π + 0.25)]/(π + 0.5)