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madam [21]
3 years ago
10

Find the area of a circle with a radius of 7 feet

Mathematics
1 answer:
-Dominant- [34]3 years ago
7 0

Answer:

153.938 ft²

Step-by-step explanation:

πr² (area of a circle where r is the radius

π(7)²

π(49)

π(49)≈153.938

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We have

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making the answer D.

We can further factor the first term here and write

9-7n^2=3^2-(\sqrt 7\,n)^2=(3-\sqrt7\,n)(3+\sqrt7\,n)

but that's clearly out of the scope of this question.

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