3 years ago

Circle O has a center at (-2, -2) and a diameter of 10 units. Which point lies on Circle O?

1 answer:

4 0

hello :
an equation of the circle Center at the A(a,b) and ridus : r is :
(x-a)² +(y-b)² = r²
in this exercice : a =-2 and b = 2 (Center at the point A(-2;-2))
r= 10/2=5
the equation is : (x+2)² +(y+2)² =25

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