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Sagot :
Answer:
(x − 7)2 + (y − 8)2 = 11
Step-by-step explanation:
I took the test
The equation of the circle with center at (7, 8) and radius of 11 is
(x - 7)² + (y - 8)² =121
The equation of a circle with center at (a, b) and radius of r is:
(x - a)² + (y - b)² = r²
The center of the circle, (a, b) = (7, 8)
That is, a = 7, b = 8
The radius, r = 11
Substitute a = 7, b = 8, and r = 11 into the equation (x - a)² + (y - b)² = r²:
(x - 7)² + (y - 8)² = 11²
(x - 7)² + (y - 8)² = 121
Therefore, the equation of the circle with center at (7, 8) and radius of 11 is
(x - 7)² + (y - 8)² =121
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