2 Answers

Abdallah Shakhatreh · Answer 1 · 2021-12-29T22:53:41+0000

Answer: 530.39 cm²

Explanation:

C=2πr, Substitute 81.64 in for C then divide 2π t get 12.99. A=πr². Plug in 12.99 for r, solve, and get 530.39 cm

Jerry Jones · Answer 2 · 2022-01-03T12:03:39+0000

Answer:

530.66 cm squared

Explanation:

c = 2(3.14)r

81.64 = 2(3.14)r

Divide both sides by 6.28

The radius is 13

a = 3.14(13 squared)

a = 530.66

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