Circles

Ans


@ShreyaNair0
I have used the concept of definite integration which will be taught in 12
If any problem let me know

@NishantThakre could you pls explain how you got the equation for A?

@ShreyaNair0
In any possible case draw graph for quadratic equation
According to our condition exactly one root lies between 1 and 0
You will find that f(1) and f(0) are always of opposite sign and that is the required condition
so I applied f(1)f(0)<0

@ShreyaNair0
You could have also solved it by finding area of secant by using basic geometry of class 10