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3 years ago

15

tom and jane want to build a round swimming pool in their backyard that is 20 feet across . how many square feet will the pool b

e ?

1 answer:

natulia [17]3 years ago

6 0

Tom and Jane r rich !

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3 years ago

The area of a circle is 161 in. What is the radius?

kirill [66]

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Approximately 7.16 in

Step-by-step explanation:

Hi there!

Area of a circle equation: $A=\pi r^2$ where r is the radius

Plug in the given area 161 in.²

$161=\pi r^2$

Divide both sides by π to isolate r²

$\frac{161}{\pi} =\frac{\pi r^2}{\pi} \\\frac{161}{\pi} =r^2$

Take the square root of both sides to isolate r

$=r^2\\\sqrt{\frac{161}{\pi}} =r\\7.16=r$

Therefore, the radius of the circle is approximately 7.16 in.

I hope this helps!

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