Question

radius of a circular region is 63 cm. find the least length of rope which is sufficient to encircle region.

Answer 1

The least length of the rope equals the perimeter of the circular region
Perimeter = 2π x radius
                   = 2  x 22/7  x 63
                   = 396 cm

Answer 2

Solution:-
To find the least length of rope which is sufficient to encircle the region, we have to find out the circumference of the circular region.
Given : radius = 63 cm 
Circumference of circle = 2πr
= 2*22/7*63
Circumference = 396 cm
Length of rope to encircle the region is 396 cm
Answer.