Question

CAN ANYONE SOLVE THIS QUESTION- The perimeter of a semicircle is 108cm. What is the perimeter of the square drawn on the diameter of the semicircle

Answer 1

Circumference of a circle is 2πr.

Perimeter of a semicirle is πr+2r

22/7*r + 2r = 108.

(22r + 14r)/7 = 108

36r = 108*7

r = (108*7)/36

r = 3*7

r = 21cm.

Therefore, diameter = 42cm

Perimeter of a square is 4 times diameter, 4*42 = 168cm

Answer 2

perimeter = 108

put it into the formula of 'pi r'

the answer you will get is the radius

then double it you will get the diameter

and then put it in the formulae of sx4 where s is equal to the diameter you will get the perimeter of the square