Question

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

Answer 1

SOLUTION:

Given:


Circumference of the outer circle= 88 cm


Circumference of the inner circle= 66 cm


Circumference of  circle= 2πr


Circumference of the outer circle= 2πr1


88 = 2πr1


r1= (88 × 7)/(2×22)


r1= (88×7)/44


r1= 2× 7


r1= 14 cm


Circumference of the inner circle= 2πr2


66= 2πr2


r2= (66 × 7)/(2×22)


r2= (66×7)/44


r2= (3× 7)/2


r2= 21/2


r2= 10.5 cm


Width of the ring= r1 -r2


Width of the ring=14-10.5= 3.5 cm


Hence, the Width of the ring= 3.5 cm


HOPE THIS WILL HELP YOU....

Answer 2

ANSWER IS IN THE IMAGE