Answer:
Area = 3.77 cm^2
Explanation:
The diagram using the given statement is attached below
Diameter of larger circle is 10 so radius R1 = 10/2= 5
diameter of smaller circle is 7.6, radius (r1)= 3.8
We need to find the area of the shaded region
Area of the circle =

Area of annulus =

=

Area = 3.77 cm^2