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Ugo [173]
2 years ago
12

Which equation is the equation of a circle with a diameter of 20 cm and center at (-3, 6)?

Mathematics
1 answer:
larisa86 [58]2 years ago
5 0
The equation of a circle with centre (a,b) and radius r is:
(x - a)^2 + (y - b)^2 = r^2
thus,
here centre (a,b) = (-3,6), a = -3, b = 6
and radius  = diameter/2 = 20/2 =10 units
therefore, the equation is
(x + 3)^2 + (y - 6)^2 = 100
which is c.

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