Write the equation of the circle having centre at (0,0) and radiu… - Vidyadip

MCQ

Write the equation of the circle having centre at $(0,0)$ and radius $a$ :

A
$x^2-y^2=a^2$
✓
$x^2+y^2=a^2$
C
$y^2-x^2=a^2$
D
$x^2+y^2+a^2=0$

✓

Answer

Correct option: B.

$x^2+y^2=a^2$

B

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