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2 years ago

9

Help me please 20 points and brainliest

1 answer:

lilavasa [31]2 years ago

8 0

Answer:

A≈12.57

Step-by-step explanation:

Using the formulas

A=πr2

d=2r

Solving for A

A=1

4πd2=1

4·π·42≈12.56637

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Read 2 more answers