Is the area of a semi circle with a radius of x greater than less than or equal to the area of a circle with a diameter of 2x

For the semi circle the area would be (x²π)/2 and for the circle we do 2/2=1 to find the radius x²π
for this we can sub values in so if x=5 5²=25 25π=78.5398 78.5398/2=39.2699=39.27 for the other one it would just be 25π=78.5398 
so the area of the semi circle would be less than the area of the full circle

820,000 is the answr