Find the circumference of the inner and outer circles

Asked by admin @ 23/08/2021 in Math viewed by 313 People

Find the circumference of the inner and the outer circles, shown in the adjoining figure.

Answered by admin @ 23/08/2021

Hii !!

Radius of inner circle ( r ) = 19 - 10 = 9 m.

Therefore,

Circumference of inner circle = 2πR = 2 × 3.14 × 9 =56.52 m.

And,

Radius of outer circle ( R ) = 10 + 9 = 19 m.

Therefore,

Circumference of outer circle = 2πR = 2 × 3.14 × 19 = 119.32 m.

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