Question

The area of the curve $x^2+y^2=2ax$ is

• A. $\pi a^2$
• B. $2\pi a^2$
• C. $4\pi a^2$
• D. $\frac{1}{2}\pi a^2$

Answer 1

The correct option is A $\pi a^2$

$x^2+y^2-2ax=0$

We can see that the given equation is nothing but the equation of Circle,
And radius of the circle is a.
Hence the area of triangle is$\pi a^2.$