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sineoko [7]
3 years ago
7

I need help me need to match i am getting confuse.

Mathematics
1 answer:
gregori [183]3 years ago
7 0

Answer:

1 A= pi 21^2

2 C=pi 21

3 A= pi 10.5^2

4 C= 2pi 10.5

Step-by-step explanation:

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