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

Q. 15.     Find the circumference of the inner and the outer circles, shown in the adjoining figure? (Take \pi =3.14)

              

Answers (1)

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We know that 

Circumference of circle = 2 \pi r

Now, the circumference of the inner circle  with radius (r) = 19-10=9 \ m is 

\Rightarrow 2 \pi r = 2 \times 3.14 \times 9 = 56.52 \ m

And the circumference of the outer circle  with radius (r ') = 19 m is

\Rightarrow 2 \pi r = 2 \times 3.14 \times 19 = 119.32 \ m

Therefore, the circumference of inner and outer circles are 56.52 \ m \ and \ 119.32 \ m  respectively

Posted by

Gautam harsolia

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