A circle has a center at (8,2). The point (3,7) is on the circle. What is the area of the circle to the nearest tenth of a square unit?

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A circle has a center at (8,2). The point (3,7) is on the circle. What is the area of the circle to the nearest tenth of a square unit?

Mathematics
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o.o
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Other answers:

sqrt(8+3)^2 +(2-7)^2
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\[d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\ d= \sqrt{(8-3)^2+(2-7)^2} \\ d= \sqrt{(5)^2+(5)^2} \\ d=~?\]
sqrt25+25 ?
no decimals please.
Yes and what is 25 + 25?
50
Yes, so \(r=\sqrt{50}\)
\[\large A_{\text{circle}} = \pi r^2 = \pi (\sqrt{50})^2 = ~?\]
7
7?
sqrt50 =7?
Okay, yeah I see what you mean
OOOHHHHH I was putting 50 instead of 7! ;v; Thanks!!
Typo.
3.14*7^2=157.1 which is the right answer
May I ask you another question?
Well when we square a square root we get the stuff inside the square root :c \[(\sqrt{x})^2 = x\] the square root and the square cancel eachother out. So.... I'm not sure where to go from that point.
Oh I guess you first simplified \(\sqrt{50} \approx 7.0\) then squared it.
Yup, may I ask another q?
I've got to head off OpenStudy right now, but @triciaal can help you! they are very smart as well :) Good luck!
this is like going the other way you have r from the area then use the formula I gave above for the circle to find (x, y) you are given (h,k) the center
Yes, thank you for the formula, but I can't really read all of the text you gave before .-.
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25?
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leave as r^2
What are h and k?
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coordinates for center of circle
Rrriiigghhttt.
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I'm sorry, I really can't understand...
I don't know how to make you understand I am totally confused now because this is even shown in the diagram I don't know what question you have
I have four answer options
(-6, 4) (2, -1) (-4, -4) (2, -9)
The answer is (2, -1)
that works
Yes, but how?
??

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