Q. 154.6( 111 Votes )

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Answer :

It is given in the question that,


Radius of outer circle = 19 m


We know that,


Circumference of the circle = 2πr


= 2 × 3.14 × 19


= 38 × 3.14


= 119.32 m


Radius of inner circle = 19 – 10 = 9 m


As we know that,


Circumference of the circle = 2πr


= 2 × 3.14 × 9


= 18 × 3.14


= 56.52


Hence,


Circumference of outer circle = 119.32 m


Circumference of inner circle = 56.52 m


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