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Given the equation of a circle below, find the diameter of the circle. Use only the digits 0-9 to enter the diameter. x² + y² + 6x - 4y = 387​
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Given the equation of a circle below, find the diameter of the circle. Use only the digits 0-9 to enter the diameter.

x² + y² + 6x - 4y = 387​

User Ericharlow
by
3.0k points

1 Answer

3 votes

Answer:

The diameter of the circle is 40 units

Explanation:


x^2+y^2+6x-4y=387


x^2+6x+y^2-4y=387


(x^2+6x+9)+(y^2-4y+4)=387+9+4


(x+3)^2+(y-2)^2=400


r^2=400


r=20


d=2r=2(20)=40

User Roman Klimenko
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