Question

15. Find the circumference of the inner and the outer circles, shown in the adjoining figure?
$(\pi = 3.14)$
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Answer 1

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Answer 2

Answer:

inner radius = 19-10= 9 m

circumference of ìnner circle = 2πr

= 2×3.14 × 9

= 56.52 m

circumference of outer circle = 2πr

=2×3.14×19

= 119.32 m

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