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iren2701 [21]
4 years ago
8

Which is the standard equation for a circle centered at the origin with radius r?

Mathematics
2 answers:
scoundrel [369]4 years ago
6 0
D. This is the base equation. 
Nookie1986 [14]4 years ago
6 0

The standard equation of a circle is given by :

(x-h)^{2} + (y-k)^{2} =r^{2}

where (h,k) is the center and r is the radius of circle.

Now in the question we are given that the center is at origin.

So coordinate of center becomes (h,k) =(0,0)

radius is r.

So plugging these values in the standard equation, we get,

(x-0)^{2} + (y-0)^{2} =r^{2}

Simplifying,

(x)^{2} + (y)^{2} =r^{2}

Answer is option first:

x² + y² =r²

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