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Zinaida [17]
2 years ago
15

Suppose the circumference of a circle is 2 pi what is the area?

Mathematics
2 answers:
Olenka [21]2 years ago
5 0
C = 2 * pi * r

Plug in what we know:

2pi = 2 * pi * r

Divide 2 pi to both sides:

r = 1

(Remember, anything divided by itself is equal to 1)

A = pi * r^2

Plug in what we know:

A = pi * 1^2

A = pi * 1

A = 1 pi

So the area is '1 pi' or just 'pi'.
irina1246 [14]2 years ago
4 0
 <span>Circumference of a circle = 2 π r 

(where r is the radius) 

Area of a circle = π r^2 

(where r is the radius) 

you have to find the radius

C = 2π unit 
r = 1 unit 

Area = π square units 
</span>
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A recipe uses 214 cups of flour for a batch of cookies. Henry makes 10 batches of cookies for a bake sale.
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Answer:

Step-by-step explanation:

A recipe uses 214 cups of flour for a batch of cookies. Henry makes 10 batches of cookies for a bake sale.

A model shows a total of c cups divided into 10 sections, each labeled 2 and 1 fourth.

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Which equation models the total number of cups of flour, c, Henry needs?

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