Question

a wire is in the form of a circle of radius 21 cm . it is bent into a square .determine the side of the square

Answer 1

Here length of wire remains constant

so circumference of circle = perimeter of square

circumference of circle =2×pi×r

=2×22/7×21

=6×22

=132 cm

so

perimeter of square = 4× side

132=4×side

side = 132/4

side=33cm

so the side of square is 33cm