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22-03-2021
Mathematics

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Аноним Аноним

22-03-2021

Answer:

31.79 cm^2

Explanation:

Area of a semi circle = 1/2(pi • r^2).

1/2(3.14 • 4.5^2)

1/2(3.14•20.25)

1/2 • 63.59

31.79

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