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Harman [31]
3 years ago
8

A diameter of a circle has endpoints P(-10,-2) and Q(4,6).

Mathematics
1 answer:
Olenka [21]3 years ago
8 0
The equation for the midpoint is given by:
 P = (\frac{x1 + x2}{2} ,  \frac{y1 + y2}{2})
 Substituting values we have:
 P = (\frac{-10 + 4}{2} , \frac{-2 + 6}{2})
 P = (\frac{-6}{2} , \frac{4}{2})
 P = (-3 , 2)
 We can find the radius of the circle using the equation of distance between points:
 d = \sqrt{(x2-x1)^2 + (y2-y1)^2}
 Substituting values:
 d = \sqrt{(4-(-3))^2 + (6-2)^2}
 d = \sqrt{(4+3)^2 + (4)^2}
 d = \sqrt{(7)^2 + (4)^2}
 d = \sqrt{49 + 16}
 d = \sqrt{65}
 The equation of the circle is its standard form is:
 (x-xo) ^ 2 + (y-yo) ^ 2 = r ^ 2

 Where,
 (xo, yo): coordinates of the center of the circle
 r: radius of the circle
 Substituting values:
 (x + 3) ^ 2 + (y-2) ^ 2 = 65

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