Question

find the side of the rhombus whose perimeter is same as the circumference of a circle of radius 7cm

Answer 1

14$\pi$=4a
14$\pi$/4=a
7/2×22/7=a
a=11

hope its right

Answer 2

Radius of circle = 7cm
Circumference = 2πr = 2 x 22/7 x 7 = 44 cm

Circumference of circle = Perimeter of rhombus
Perimeter of rhombus = 44 cm

Let the side of rhombus be "a"

4a = 44
a = 11 cm

Hence, your answer is 11 cm (side of rhombus).

Hope This Helps!