Question 68312
Area of a circle=(pi)r^2={{{(3.14)(r^2)}}}

Area of the plastic=area of large disc - area of small disc

radius of large disc=13/2 inches
radius of small disc=10/2=5 inches
Area of large disc={{{3.14(13/2)^2}}}

Area of small disc={{{3.14(5)^2}}}

Area of the plastic={{{3.14(13/2)^2-(3.14)(5)^2}}}

Area of the plastic={{{3.14(169/4)-3.14(25)}}}

Area of the plastic={{{132.665-78.5}}}

Area of the plastic={{{132.665-78.5=54.165}}} sq inches-----------------answer

Hope this helps---ptaylor