Question

Rahul walked from A to B as shown in the figure, where diameter of the semicircle is 7m.
Sunita walked the same distance by walking round a square park. Find the side of the
square.
(See Lesson 20)
7 m
B​

Answer 1

Answer:

Here, perimeter of the semicircle and the square will be same because both walked the same distance

Step-by-step explanation:

radius of semicircle=7/2

perimeter of circle=2 x pi x radius

perimeter of semicircle=(2 x pi x radius)/2

so here radius = 7/2

so perimeter of semicircle=(2 x pi x 7/2)/2 = 11

let side of square be a

so perimeter of square= 4 x a

now, 4 x a = 11

so a= 11/4

side of the square is 11/4= 2.75