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weeeeeb [17]
3 years ago
6

Please Help! it's simple!

Mathematics
1 answer:
ss7ja [257]3 years ago
8 0

Answer:

28.27

circumference of finding a circle divided by two.

(2\pi \:r {}^{2} ) \div 2

(2×3.14×9)/2

56.55/2

28.27

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