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timofeeve [1]
3 years ago
10

What is the equation of the circle whose center and radius are given.

Mathematics
2 answers:
muminat3 years ago
5 0
Hello!

The equation for a circle is

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

(h,k) is the center
r is the radius

Put in the values you know

(x - 7)^{2} + ( y + 3)^{2} = 7^{2}

Simplify

(x - 7)^{2} + ( y + 3)^{2} = 49

The equation is (x - 7)^{2} + ( y + 3)^{2} = 49

Hope this helps!
bazaltina [42]3 years ago
5 0
Use the equation of a circle: (x – h)² + (y – k)² = r².

Plug in the numbers; center is (h, k) and radius is r.

(x - 7)² + (y - -3) = 7²
Simplify to:
(x - 7)² + (y + 3) = 49
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