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alexgriva [62]
2 years ago
7

Help please what us radius and diameter​

Mathematics
2 answers:
docker41 [41]2 years ago
5 0

Answer:

The Radius is 7.5, the Diameter is 15, as you are just doubling the Radius

Step-by-step explanation:

Elis [28]2 years ago
5 0

Answer:

radius= 7.5  

diameter= 2*7.5= 15

Step-by-step explanation:

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A conical-shaped umbrella has a radius of 0.4 m and a height of 0.45 m. Calculate the amount of fabric needed to manufacture thi
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Answer:

The correct answer will be "0.756596 m²".

Step-by-step explanation:

The given values are:

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As we know,

The lateral surface of an umbrella will be:

⇒  \pi r\sqrt{r^2+h^2}

On substituting the values, we get

⇒  \pi \times 0.4\sqrt{(0.4)^2=(0.45)^2}

⇒  0.756596 \ m^2

So that the amount of fabric needed will be "0.756596 m²".

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