Question

find the circumference of inner and outer circle,shown in the given figure. (take pie= 3.14)​

Answer 1

Answer:

please mark this answer as brainlist answer

Step-by-step explanation:

Radius of outer circle (r) = 15 cm.

Therefore Circumference of outer circle = 2π r = 2 x 3.14 x 15.

= 94.2 cm.

Now radius of inner circle(r ') = 15 -6 = 9 m.

Therefore, Circumference of inner circle.

= 2π r ' = 2 x 3.14 x 9.

= 56.52 m.

Answer 2

Answer:

$2 \times \frac{22}{7} \times 15$

$94.28 {cm}^{2}$

$2 \times \frac{22}{7} \times 9$

$56.57$