Find the circumference of the inner and the outer circles, shown in the adjoining figure. (Take π=3.14)

# Find the circumference of the inner and the outer circles, shown in the adjoining figure. (Take π=3.14)

1. A
56.52m, 119.32 m
2. B
66.52m, 119.32 m
3. C
56.52m, 129.32 m
4. D
66.52m, 129.32 m

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### Solution:

Concept: Given;
Radius of outer circle = 19 cm
Thickness= 10 m
= 19-10
= 9m
Now we will apply the formula of circumference.
Circumference of inner circle= Circumference of the outer circleHence, the correct answer is option 1.

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