Question

the area of shaded region between two concentric circles​

Answer 1

Step-by-step explanation:

Let the radius of bigger circle be R and smaller circle be r and both the circles are concentric.

Area of bigger circle =πR²...……………(1)

Area of smaller circle =πr²……………….……(2)

Now, the shaded region between these concentric circles = πR²–πr² = π(R²–r²)