Answer:
Area of Shaded Region ≈ 141.37 cm^2
Step-by-step explanation:
Given radius of 9 cm for the outer circle;
πr^2, ⇒ Substitute value of radius,
π * ( 9 )^2 ⇒ Square 9, keeping value in terms of π,
Area of Outer Circle; 81π
Provided a radius of 6 cm for the inner circle;
πr^2, ⇒ Substitute value of radius,
π * ( 6 )^2 ⇒ Square 6, keeping value in terms of π,
Area of Inner Circle; 36π
Take the shaded region to be the value of the inner circle ( area ) subtracted from the area of the outer circle;
Area of Shaded Region ⇒
81π - 36π =
45π =
Area of Shaded Region ≈ 141.37 cm^2
