20-02-2019
Mathematics

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choixongdong choixongdong

20-02-2019

Answer:

706.50 mm^2

Step-by-step explanation:

C = 2 pi r

30 pi = 2 pi r

r = 15

A = pi r^2

= 15^2 pi

= 225 * 3.14

= 706.50 mm^2

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