How much bigger is Fallout 4 than Fallout 3?

How much bigger is Fallout 4 than Fallout 3? Red area is inaccessible. As you can count on your own, Fallout 3 is bigger than Fallout 4 about 16%.

Red area is inaccessible. As you can count on your own, Fallout 3 is bigger than Fallout 4 about 16%.
See also  What number is Paramount Plus on Spectrum?