The area of the region bounded by the ellipse 
is
Given;
The ellipse 
By the symmetry of the ellipse with x-axis and y-axis.
Required area
= 20π sq.units
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The area of the region bounded by the ellipse is
Given;
The ellipse
By the symmetry of the ellipse with x-axis and y-axis.
Required area
= 20π sq.units