Question

If the circumferences of two concentric circles forming a ring are 88cm and 66cm respectively. Find the width of the ring

Answer 1

Circumference of first circle = 88cm
=> 2*22/7*R = 88cm
=> 44/7*R = 88cm
=> R = 88/44*7cm
=> R = 14cm
Circumference of second circle = 66cm
=> 2*22/7*r = 66cm
=> 44/7*r =66cm
=> r = 66/44*7
=> r = 10.5cm
Width of the ring = 14cm-10.5cm = 3.5cm