Question 144207
area=pir^2
area=3.14*5^2
area=3.14*25
area=78.5 in^2 for the total area of the 10 inch plate.
area=3.14*3^2
area=3.14*9
area=28.26 in^2 for the inner circle.
78.5-28.26=50.24 is the area of the 10 in. plate with a 3 in. hole.