A) \[{{x}^{2}}+{{y}^{2}}+2x-2y=62\]
B) \[{{x}^{2}}+{{y}^{2}}+2x-2y=47\]
C) \[{{x}^{2}}+{{y}^{2}}-2x+2y=47\]
D) \[{{x}^{2}}+{{y}^{2}}-2x+2y=62\]
Correct Answer: C
Solution :
The equation of circle, circle centre is at (A, k) and radius r is The equations of diameters of a circle are ... (i) and ... (ii) On solving Eqs. (i) and (ii), we get . Coordinates of centre are (1, -1) and area of the circle Equation of the circle whose centre (1 ,-1) and radius 7 isYou need to login to perform this action.
You will be redirected in
3 sec