Question

Find the circumferences of both circles

Answer 1

Circumferences formula: C=pi x d

Now we’re adding 9 + 2.5 (diameter)

Which is 11.5

Pi = 3.14

C = 3.14 x 11.5 = 36.11

Answer: 36.11

Answer 2

Blue circle=9π-28.284

Yellow circle=23/2π-36.128

Explanation:

the circumfrence is worked out using the equation =pi x diameter

hope this helps ;) xx