Q. 8. Pragya wrapped a cord around a circular pipe of the radius (adjoining figure) and cut off the length required of the cord. Then she wrapped it around a square box of side (also shown). Did she have any cord left?
It is given that the radius of the circle is 4 cm
We know that circumference of circle =
And perimeter of the square is
Length of cord left is
Therefore, Length of cord left is