3 years ago

Write the equation of the circle: Center at P(2 , -1) and a diameter of 10m

1 answer:

4 0

An equation of the circle is
(x-h)² +(y-k)² =r²,
where (h,k) are coordinates of the center of the circle, and r is a radius of the circle.
We have h=2, k= -1, and radius r=diameter/2=10/2=5.

The equation of our circle is
(x-2)²+(y+1)²=25

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