The area of the grey part is 20π in².
What is Area of Circle?
The area of a circle is the space occupied by the circle in a two-dimensional plane.
Here, radius of smallest circle = 4 inches
radius of bigger circle = 6 inches
Area of Circle = πr²
area of smaller circle = π X 4²
A₁ = 16π in.²
area of bigger circle = π X 6²
A₂ = 36π in²
The area of Grey circle = A₂ - A₁
= 36π-16π
= 20π in²
Thus, the area of the grey part is 20π in²
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