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Помагите даю оччен много баллов ​

Помагите даю оччен много баллов ​-example-1

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Answer:

2. 4.46

3. 12

Explanation:

2. D =
(P)/(\pi ) =
(14)/(3.14) = 4.458 = 4.46

3.
(4)/(5) = (x)/(15)

5 * x = 4 * 15

5x = 60

x =
(60)/(5) = 12

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