Which source is considered primary source of scientific information Original

1 answer:

4 0

<span>Primary sources are original materials. They are from the time period involved and have not been filtered through interpretation or evaluation. Primary sources are original materials on which other research is based. They are usually the first formal appearance of results in physical, print or electronic format. They present original thinking, report a discovery, or share new information. </span>

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If a circle has a diameter of 16 feet, which expression gives its area in square

bagirrra123 [75]

Answer:

The options are unclear but the answer is 8^2π square feet or 64π sqfeet

Explanation:

Area of a circle is denoted by: πr^2 where r is the radius of the circle.

In this question, the diameter was given. The diameter of a circle is twice the radius. Therefore, in order to get the radius, we divide the diameter by 2 i.e. r = d/2

= 16/2 = 8 feet.

Thus, the radius = 8 feet.

Hence, Area of a circle = πr^2

= π × 8^2

= 64π or 8^2π sqfeet.

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olga2289 [7]

Answer:

Oxygen I believe

Explanation:

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Klio2033 [76]

Answer:

I don't understand,

There is no diagram.

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Can someone help me please?

lianna [129]

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