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Which equation is an equation of a circle with radius of 10 cm and center at (-3, 6)?

A) (x + 3)^2 + (y - 6)^2 = 20
B) ( x + 3)^2 + (y - 6)^2 = 100
C) ( x - 3)^2 + (y + 6)^2 = 20
D) (x - 3)^2 + (y + 6)^2 = 100

please show your work

Respuesta :

elhamrah11
The equation for a circle is 
(x-h)^2 + (y-k)^2 = r^2
(-3,6)
-3 is h 
6 is k 

(x+3)^2 + (y-6)^2 = 10^2
10^2 = 100 

(x+3)^2 + (y-6)^2 =100
The answer is B!

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